A/N - Okay, this chapter took a while. It's not an incredibly long chapter, and it's mostly just training and introducing something new to this story. Just by the title of the chapter, you should be able to figure out what's going on in the chapter pretty easily.

Anyways, I know it's been pretty much forever since I updated this fic. Sooo, I hope you enjoy this chapter!

Chapter 4 – The First Heat

After the Genin had purchased their weapons and gone their separate ways, Naruto had decided to take a stroll through the village. He didn't want to head home right away, though he didn't have any particular reason for why not. He still noticed the occasional glare being sent his way, but for the most part the villagers had chosen to leave him alone.

The people had mostly changed their minds about him, or at least that's how it felt. There were still a large number of people who denied the truth about his parentage, and others that felt he was the demon itself. But, most people had decided to change their minds about him. Sadly, those who changed their minds about him were a mixed bunch. Half of them wanted a shot at getting access to his vast riches. Whether this was via the use of arranged marriages or simply trying to seduce him, it didn't matter. The other half insisted on sucking up to him, just as they had done to Sasuke.

Shaking his head to rid it of such thoughts, he rounded a corner and blinked at what he was seeing. Standing a short distance away was his sensei, Yugao Uzuku. In front of her, with his back turned to Naruto, was the guy that he assumed to be her boyfriend, Hayate Gekko. Taking a few steps closer, he listened as they argued.

"How do you explain this, Hayate?!" Yugao exclaimed as she held up a pair of women's panties. "And don't try to feed me any bullshit about these being some kind of 'present' for me! You've been cheating on me all this time, haven't you?!"

Hayate coughed into his fist a couple of times before staring coldly into his girlfriend's eyes. "What's the point in denying it? You've already made up your mind about me."

Naruto scowled at this and thought, He's not even trying to deny the truth! Fucking hell!

Yugao seemed to be of the same opinion as she shouted, "You're not even going to deny it?! Why, Hayate? I thought you loved me! I…I loved you, Hayate. I was ready to get married and have children together. I…I…"

"Yes, yes, you wanted to start a family. That's the problem, Yugao. I don't want children. Especially not in a world like this. 'They' are everywhere out there and I'd rather not bring children into the world while those things exist. Besides that, you insisted on waiting until we were wed to spread your legs for me. I'm a man, Yugao; I have needs. And let's face it, you weren't meeting them. So yes, I slept around."

Yugao couldn't even look him in the eyes anymore. She lowered her head as tears fell to the ground below. "Did you ever love me? Did you ever intend to be loyal to me? I thought we had something special. Naruto-kun was right…"

Hayate quirked a brow and asked, "Naruto Uzumaki? Is he the one that put these ideas in your head?"

Yugao glared into his eyes and shouted, "Just tell me the truth! Did you love me or not?!"

The brunette shrugged and said, "Truthfully? Not really. Yugao, like I said before, I'm a man with needs and you weren't putting out. In a world where we could die at any time, or worse, getting turned into one of 'Them', we should enjoy things while we can. So I decided to 'sleep around', so to speak. Maybe if you would have cast aside your dream of a happy life and given something back to me for my time, we could have stayed together like a happy couple. But…"

Before Hayate could say anymore, Yugao slapped him as hard as she could across the face, sending him reeling a bit. When he gave her the nastiest glare and began to swing his fist towards her in retaliation for what she just did, Naruto took that moment to act. Feeling somebody's hand on his wrist like a vice-grip, Hayate followed the arm until he was looking straight into Naruto's eyes. "And just what did you think you were going to do to my sensei?"

"Tch. So it was you that put these ideas in her head. Fine, you want her so bad, you can have her. I'm done with this shit anyways." Hayate said before he pulled his arm free and began to walk away. "Stupid bitch and her lapdog."

Naruto glared at him and said, "At least apologize to her, you jackass!"

Hayate glanced back at Naruto and Yugao before walking off without a word.

"Fucking bastard." Naruto said angrily. Calming himself down, he turned to look into his sensei's eyes. Frowning at the tears streaming down her cheeks, he pulled her into a hug and patted her back gently. "For what it's worth, I'm sorry, Sensei. I know it'll be hard for a while, but you're strong. You'll get through this. And if it helps any, you'll always have us, should you ever want to confide in someone. We're a team now, and that means we'll be there for each other. Okay?"

Yugao looked into Naruto's eyes and said, "Thank you, Naruto-kun. Um, can you help me real quick?"

Naruto smiled kindly at her and said, "Sure. What do you need?"

"I want Hayate's crap gone. I was hoping you could help me remove his things from my apartment. I don't care what you choose to do with it; I just want it gone." Yugao said.

The blonde smiled at her and said, "Sure thing Yugao-sensei. Show me where you live and we can get right to work on that."

Smiling at her student, she hugged him for a moment longer before she turned and began to lead him to her home. Thank you, Naruto-kun.

The Next Morning

Teams 11 and 12 stared around at the massive enclosure barring the way into the infamous Forest of Death. Staring past the closed gate, they saw nothing but darkness inside. Within the vast forest, they could hear the cries of many different animals and insects. "Well, this'll be interesting, at least." Naruto said with a shrug.

It was at this point that Anko and Yugao appeared in front of them. Anko had a large, almost predatory grin on her face. Yugao, on the other hand, had a neutral expression on her face. She had applied some makeup earlier this morning to try and hide the fact that she had been crying, but she could tell that Naruto and a few of the other girls noticed. Offering them the smallest of smiles, she motioned for them to listen.

"Alright kiddos, here's how this is gonna work." Anko began. "This is my personal playground. I know this place like the back of my hand. What we're gonna do is simple. I've picked out an area within that we'll begin our training in. I'm not sure how much your academy teachers taught ya, so we're going to begin with some simple chakra control exercises. Tree climbing and water walking are essentials. Trust me, these simple exercises will save you out there when it comes to avoiding 'Them'. We're also going to determine your chakra natures and get you started on the beginning exercises for whatever your elements are. This might be an advanced exercise and not something the others in your graduating class will be doing, but we want to make sure you six are ready for absolutely anything we might encounter out there. Understand?"

The six Genin nodded and said, "Yes, sensei!"

"Good. Now, before we step inside, let's determine your natures." Anko said, nodding to Yugao to pass out the chakra papers. Once they each had one, Anko said, "What you're holding is called chakra paper. The paper will react differently depending on your chakra nature. Fire, it will catch fire and turn to ash. Wind, the paper will split in two. Lightning, the paper will crumple up. Water, the paper will become damp. Earth, the paper will turn to dirt and crumble away. Understand?"

Everyone nodded in understanding. "Naruto-kun, we'll start with you." Yugao said. "Don't try to push too much chakra into the paper. You don't want to destroy it."

Naruto chuckled lightly before he channeled his chakra into the paper. It split evenly down the middle. However, both sides became damp enough to the point that the paper practically became water at this point. Seeing this, Naruto looked into Yugao's eyes and asked, "Is it common for people to have more than one chakra nature?"

Yugao shook her head and said, "Most people only possess a single chakra nature. However, with enough experience, they can learn how to use other elements. From the looks of it, you have a powerful water nature with a strong wind nature as well. We'll have to get you started on the right exercises. Saya, you're next."

Saya nodded and looked down at the paper in her hand. Pouring some chakra into it, she watched as a small, barely noticeable part began to crumple up before the entirety of the paper lit on fire and burned away to ash. Frowning in confusion at this, she said, "It's obvious I have an affinity for the fire nature, but…"

Anko nodded and said, "Yeah, I saw it too. It seems you have a slight affinity to the lightning nature. With enough training, that should improve. But for the time being, we'll focus your exercises on learning how to harness fire-natured chakra. Sakura, it's your turn."

The pinkette nodded and focused, watching as the entirety of her paper crumbled away into dirt that fell harmlessly to the ground. "Well, that one's obvious. I was kind of hoping to have a second nature as well." She said.

Anko smirked at her and said, "With enough training, you'll get there. For now, just be happy with what you have. Saeko, you're up now."

The swordswoman nodded and channeled her chakra into the paper. It immediately became damp, signifying that she had a water affinity. "That works for me." She said with a casual shrug of her shoulders.

Misuzu decided she would go next. Pouring some chakra into the paper, she watched as the paper first crumpled up before it was set ablaze, the ashes falling neatly to the ground. "Ahh, fire and lightning. Very nice combination." Anko said. "Now for Toshimi. Show us what you got, girlfriend!" she cheered, pumping her fist into the air.

While the others sweatdropped at the antics of Team 11's sensei, Toshimi simply giggled and poured some chakra into the paper. It crumpled neatly into a ball, resting in her hand. "Neat!"

Anko clapped her hands to get their attention. "Alright, we've got two water affinities, one wind affinity, three lightning affinities, two fire affinities, and one earth affinity. That's a pretty good mix. This means you'll all be capable of covering each other's weaknesses and get to be some kickass kunoichi! Plus Naruto, of course."

Naruto chuckled and shrugged it off. Anko was unique and he wasn't going to give her a hard time. Seeing this, Yugao smiled at him before she turned and opened the gate. "Let's get in there. We've got the perfect spot picked out. Make sure you stay with the group. It's dangerous in here. It's called the Forest of Death with a very good reason, after all."

The Genin nodded as one and followed their sensei into the forest. They were led through the forest, avoiding giant animals and insects along the way, until they finally settled down in a large clearing. The sunshine was beaming down through the treetops, providing plenty of light for what they were about to do.

Turning to the Genin, Yugao smiled kindly at them before she walked to a nearby tree. "I'm going to show you the first chakra control exercise. You will keep at this until we tell you all to stop. Now watch." And with that, the purple-haired swords mistress began walking up the tree, only stopping when she settled herself down on a large branch. "Saya, I have a feeling you already understand how this works. So why don't you tell your friends and we can begin?"

The pink-haired genius nodded and began her explanation. "Yugao-sensei channeled chakra in the soles of her feet and essentially walked up the tree like how magnets will stick together. I assume that you need a finite amount of control to stick to the tree. Too little and you obviously won't make much progress. While if you use too much, you're likely just going to destroy whatever you're trying to climb. Naruto-kun, this exercise is going to be hard on you. I have faith in you, though. Good luck."

Naruto smiled at her in thanks. When Anko threw six kunai to them, one at each of their feet, they listened as she said, "You'll be using those to mark your progress. Some of you will naturally get this pretty easily. Others, like Naruto-kun, are gonna have one hell of a time trying to get this right."

Sure enough, as Naruto tried to run up the tree, he just slid right off and fell on his head. "Ow." He said before grumbling a bit. "Okay, just need to apply a little more to it and I should be able to do it. Hopefully."

Meanwhile, Saya and Sakura had already reached branches level with the one Yugao was sitting on. Seeing this caused Yugao to smile at that. However, her next words made them worry a bit. "Good job girls. Now, you're going to continue running up and down your trees until you're exhausted. I recommend aiming to reach the top of the trees. But be careful! If you start running low on chakra, then stop. Don't try to push yourselves into going higher. Just come down and rest." Nodding as one, the two pinkettes began both ascending and descending the trees until they felt comfortable enough to aim higher and higher.

Misuzu and Toshimi were sharing tips between the two of them, doing whatever they could to make it up their trees. They were having much better progress than poor Naruto was. Then again, Saeko seemed to be having trouble as well. Odd.

Speaking of Saeko, she frowned to herself as she kept blasting small craters into her chosen tree. It wasn't enough to impede her progress, but it was still annoying. No matter how much she tried to lower her chakra output, it just didn't seem to be working. Saeko was quickly growing frustrated with her lack of progress. However, before she could lash out in any way, Naruto placed a hand upon her shoulder. Looking into his eyes, she asked, "W-What? Is something wrong?"

Naruto shook his head and said, "Not necessarily. I just noticed you were having some trouble. I am, too. I either use too little or too much. Saeko-chan, I think you have an abundance of chakra. More than most people do. But, there's something else I've noticed. I don't really know how to explain it, but it's like you're drawing in chakra from nature itself. I don't really understand it, but I can feel it."

Anko quirked a brow at this and walked over to the duo. "Saeko, show me what you're doing. I want to see this for myself."

Saeko nodded and turned, running towards the tree and trying to climb it once again. She almost reached the nearest branch, only to suddenly be thrown off by an explosion under her feet. Saeko expected to fall to the ground hard, but her beloved Naruto-kun caught her before she could. Blushing slightly, she smiled thankfully at him. "Thank you, Naruto-kun."

Anko frowned and said, "Saeko, I think you've got a kekkei genkai. I've heard about a clan out there that has a unique kekkei genkai. They're nearly extinct, so not many people really know about them. This particular kekkei genkai is more like a double-edged sword than anything. This clan's kekkei genkai allows them to draw in natural energy from the world around them, allowing them to use senjutsu without needing to sign a summoning contract and going through all that mumbo jumbo. The problem with this is the fact that the constant draw on natural energy tends to drive them mad to the point that they feel an uncontrollable urge to kill someone or something around them."

"If I had to guess, I'd say you're a distant relative to that clan. You share the same kekkei genkai, but it's diluted, to an extent. So, while you occasionally feel the need to kill someone, you're able to control yourself better than others in the clan could. I don't think they ever gave a name to their clan or the kekkei genkai, and there were very few notes that we could find. So you're in completely new territory here. We'll just have to try and work together to overcome this particular drawback."

Saeko nodded in understanding before giving a shrug of her shoulders. "Very well. This just means I'll need to work hard to control both my chakra and this nature chakra as well. Thank you, Anko-sensei. I need to meditate for a time and try to balance out the energy within me. Naruto-kun, keep at it and you should reach the first branch soon enough." She said before going to the center of the clearing and sitting cross-legged on the ground. Taking a deep breath, she calmed herself and delved deep into a meditative trance.

Watching her for a moment longer, Naruto nodded and proceeded to resume climbing the tree. You can do it, Saeko-chan. Just as I can do this. We just need to put our minds to it and give it all of our effort and we should see an improvement in no time.

Later that afternoon

The Genin of Teams 11 and 12 laid on the ground, each of them panting as they tried to catch their breath. Smirking at them, Anko said, "Good job kiddos! Keep up this pace and you kids'll be just fine. That'll be all for today. Rest for a while and then we'll escort you back out of here. We'll even buy you dinner! Right Yugao?"

Yugao was watching Naruto for a little while, a small smile adorning her face. When she heard Anko's question, she nodded and said, "Of course, Anko. I think after today, they've earned a little reward."

The Snake Mistress allowed a small smirk to play at her lips. She had seen Yugao's gaze lingering on Naruto occasionally throughout the day and this just cemented it for her. Someone's got a little crush. How adorable. She is so getting teased for this later!

Naruto had noticed the prolonged stare as well. He had chosen not to ask about it in front of the others. However, Saya had a different opinion, it would seem. "Yugao-sensei? Did something happen between you and Naruto-kun? You've been watching him with a smile all day."

Yugao blushed deeply and tried to stammer out some kind of excuse. However, she found herself unable to form a coherent sentence. Naruto seemed to take this as his cue to speak, so she listened to what he was about to say.

"I spent some time with Yugao-sensei yesterday after our team meeting. It turns out Hayate was cheating on her. They got into quite the argument, and he tried to hit her. I took care of it and even helped her get rid of Hayate's junk. After that, we sat and talked for a while. Turns out that we get along really well. But no, nothing really happened between us." Naruto explained.

The other Genins nodded in understanding. However, Saya looked at Yugao once again and said, "You're starting to see what's so great about Naruto-kun, aren't you? Don't fall too hard, now. He's taken."

Yugao just blushed worse and buried her head in her hands. "Stop teasing me already. Please?"

Anko smirked and slung an arm around Yugao's shoulders, hugging her against her buxom body. "Yugao, you've got nothing to be ashamed of. He's a good-lookin' guy and you've got a sexy bod. Just imagine the fun times you could have together."

Yugao sighed and hung her head. "Dammit. Let's just go. Okay?" she said before she began walking off at a quickened pace.

Naruto hurried after her, not wanting to leave her alone in the Forest of Death, after all. "Shouldn't we follow them?" Misuzu asked somewhat unsurely.

Anko smirked at the girl and said, "We'll follow them, but at a distance. I want to see what they get up to when they think nobody's watching. Should be fun!"

The other girls, or at least a majority of them, seemed irritated by the possibilities. However, they followed Anko, making sure to be extra stealthy just so the duo wouldn't notice them.

Catching up to Yugao, Naruto reached out and took her hand into his. "Yugao-sensei? Don't let their teasing get to you too bad, okay? They're only poking a bit of fun at us. Personally, I'm just glad I could help you yesterday. Right place at the right time. That's how I'm choosing to view it. As for that kiss you gave me…I know it was a spur of the moment thing. You were upset and you still are. I know that I spotted the makeup pretty easily. You were crying again, weren't you?"

The purple-haired woman couldn't look him in the eyes. "Yes. I was. I'm sorry, Naruto-kun. I know I shouldn't have kissed you last night. I don't know what the hell came over me. You know I didn't mean to lead you on, right?"

The blonde smiled and reached up, placing his palm against her cheek. Without a word, he reached up and began to rub some of the makeup away. Sighing, he pulled her into a hug and said, "It's okay to cry, Sensei. I'll be with you as long as you need me to be, okay? I know you're hurting right now, especially after he said those things to you. And before you even go thinking about it, you aren't some skank. You're in a dark place right now and it's my job, as your friend, to help you through this. I want to be here for you. I know you wouldn't lead me on or try for some kind of relationship so soon after what happened. So you really don't need to worry. And, if need be, I can tell the others to stop teasing you. I think telling them the truth about everything might help, but that's entirely up to you. I just want you to know that I care, Sensei. I'm here as long as you need me."

Yugao blushed deeply and proceeded to bury her head in Naruto's chest. Hugging him back, she simply allowed herself to smile and feel comfort in his presence. After a few, brief moments, she looked into his eyes and leaned in, capturing his lips with hers as she had done the night before. It only lasted about five seconds, but it certainly left Naruto in a trance-like state. "Thank you, Naruto-kun. I appreciate you trying to help me. Just think of that kiss as a thank you for being such a good friend."

Naruto nodded slowly, not trusting his voice at the moment. However, while he knew she didn't mean anything serious by it, he wanted more of that feeling. It took all of his self-control and restraint to keep himself from kissing her senseless. Yugao-sensei's beautiful. Hayate, you threw away a real gem. Taking a moment to collect himself, Naruto simply smiled softly at his sensei and said, "You're welcome, Sensei. Glad I could help." Come on, Naruto! You can do this! Stay in control! Don't let your baser urges get the best of you!

Yugao seemed to notice his inner conflict and frowned. "Naruto-kun? What's the matter?" Pressing her hand to his forehead, she soon went wide-eyed and said, "You're burning up! Did we push you too hard today? Maybe we should take you to see a doctor. Anko can lead the others out of here. Why don't we—"

Before Yugao could say anymore, Naruto leaned in and began kissing Yugao. As they kissed, he pulled her flush against him and soon deepened the kiss. Slowly, she began to melt into the kiss, wrapping her arms around him and returning his kiss with equal fervor. When his hands began roaming her body, she blushed deeper, but didn't move to stop him.

Naruto separated from her, breaking their kiss and leaving both of them wanting more. As soon as they caught their breath, the two of them began to kiss once again while Naruto's hands grabbed her ass, causing her to squeak in their kiss. However, she soon began to giggle before leaning in and pressing tender kisses along his neck and collarbone.

After what felt like an eternity, they both managed to regain their senses and stopped before they went too far. As it was, his hands were nearly on her breasts, having slid up underneath her shirt quite a ways. Yugao, on the other hand, was a blushing mess as she tried to figure out what the hell just happened! However, these thoughts came to a crashing halt when Naruto suddenly collapsed.

Quickly kneeling down, she felt Naruto's head again and cursed. After a moment, she looked over and watched as Anko and the other girls came out of hiding. "Tease me and I'll kill you."

Anko quickly shook her hands before her and said, "Wouldn't dream of it. Yeah, we were watching, but we definitely weren't expecting that."

Saya nodded before she walked up to Naruto and felt his forehead. "We need to get him to the hospital. Something's wrong, especially if he can't control his urges." The others nodded in agreement before Anko lifted Naruto, slinging him over her shoulder. Together, they hurried out of the Forest of Death, aiming straight for the hospital.

Please be okay. They thought as one.

Hospital

Two hours after arriving at the hospital, Naruto's usual doctor came into the room and frowned as he looked over the results of the blood test. Other tests had been conducted, of course, but nothing concrete had been found yet. However, as he looked over Naruto's results for the various tests that had been performed, he found something of an oddity.

Walking up to Naruto's bed, he decided to take the boy's temperature. The result was an astounding 106 degrees Fahrenheit. Calling for some nurses, he ordered them to prepare an ice bath. They needed to cool himself and his body temperature down before his brain suffered damage from the overwhelming heat.

As he waited for that, the doctor, a man by the name of Mitchell, looked at Naruto and shook his head. "Physically, he's perfectly healthy. Aside from the fever, that is. However, due to his unique 'condition' as a jinchuriki, he's bound to go through different 'stages', so to speak. However Fourth-sama's seal works, it seems to be siphoning the Kyuubi's chakra and adding it to Naruto's own massive reserves. This, in itself, isn't exactly a problem. Yes, chakra control will be a problem for him throughout this process, but this isn't really all that worrying."

Sighing here, the doctor looked around at Naruto's teammates and friends. "If I'm correct, I think he's experiencing a kind of 'heat'. Just like any animal out there, like cats or dogs, he'll experience whatever a fox would. In this case, he's gone into heat and, essentially, needs to find a mate. Tell me, when this fever of his first hit him, what was going on?"

As everyone turned their gazes as one to Yugao, she blushed a very deep shade of red and began to shyly poke her fingers together. "U-Um…we were talking and then he kissed me and…and we could barely stop ourselves from doing something we'd regret later. It felt so good, though. I could barely focus at the time."

Mitchell nodded and looked back at Naruto. "That's not at all surprising. In fact, from what I've gathered, it seems he has attracted a number of girls to him, not just you lot. Naruto is exuding pheromones that, just like an animal, are attracting potential mates to him. It's almost like a gravitational force is pulling girls to him, whether he or they realize it. Yugao, I think your close proximity to Naruto at the time is what caused you to lose yourself in the pleasure. It's a good thing you two regained your senses before anything could happen."

Yugao blinked in confusion and asked, "Why's that, Doctor?"

Mitchell looked at Naruto again and said, "We ran tests on everything we could think of, including his sperm. As it stands, his sperm is incredibly potent. It's to the point that he can and will impregnate damn near any woman he sleeps with. So, if anyone wants to be sexually active with him, it would be best to make him wear a condom and for the women involved to be on some form of birth control."

Sighing to himself, Dr. Mitchell said, "Naruto is bound to be more aggressive and assertive while in heat. Once he's cooled down, he should be okay for a while. But there's no guarantee his fever won't spike again. I think the best solution to this problem would be for a willing participant to help him release all of his pent-up sexual frustration. Once he's had sex, he should calm down and begin to behave like himself again."

Looking pointedly at Yugao, he said, "You are in a relationship already, are you not?"

Yugao scowled and said, "Not anymore. That bastard was cheating on me."

Mitchell nodded and said, "Alright then. However, until you've sorted out your feelings regarding Naruto, I want you to try and keep some distance between you. If you give yourself to him, even while he's like this, you need to be absolutely sure that you want to be in a relationship with him. Otherwise, you could very well hurt him, even without meaning to. That goes for the rest of you as well. Don't just lead him on. If you truly love him and want to be with him, you can help him out. But don't just go jumping into a relationship so fast. Be absolutely sure that this is what you want. And please don't try to take advantage of his new urges to try and force him into a relationship with you."

The girls each nodded in understanding. Yugao, however, looked at Naruto's peacefully sleeping face and said, "I never meant to lead you on, Naruto-kun. Kami, I must seem like such a slut. I was fully ready to have sex right there and then."

Misuzu patted Yugao's arm and said, "No, you don't seem like a slut to me or anyone else here. None of us knew this would be a problem that we'd have to face someday. We're all so focused on getting stronger so we can fight 'Them' and enemy shinobi that we never considered something like this could happen. So it's not your fault, Yugao-sensei."

Anko decided to ask the doctor something. "Doc, you said he's going to be more aggressive, right? Could we help him by allowing himself to unleash that aggression on missions that take us outside the village? Or would that be too dangerous?"

Mitchell frowned and tapped his chin for a moment. "You want to take your teams out on C-rank or higher missions outside of the village. I assume you mean to let him run wild and kill as many of 'Them' as possible. It's theoretically possible, but I wouldn't recommend it. Naruto isn't quite in control of himself at the moment. There's no telling what could happen outside of the village. I suggest that you stick to training your teams and doing what you can to help him through this confusing stage of his life. And, this should go without saying, but at least try to resist screwing his brains out. I can't stress that enough. I would also recommend warning the other teams of Genin to try and steer clear of him."

Stroking his bearded chin, Mitchell decided to drop another bombshell on them. "I would also recommend keeping him away from other men especially. If he feels that they're encroaching on his territory, he'll attack that person quite viciously. So for instance, if he sees Sasuke Uchiha walking too close to a girl he has feelings for…well, it would be in everyone's best interests to get Sasuke the hell out of there before Naruto can kill him. And before you get on my case about it, I'm only using Sasuke as an example. I know what became of him, and I quite frankly don't care one way or another. My point is that it would be a damn good idea to keep him away from the other teams, especially if he likes one or more girls on those other teams."

Saya scowled at this and said, "Then we DEFINITELY need to keep him away from Team 7. Naruto cares for Rei a good deal and seeing her with Takashi would probably set him off. As frustrating as Takashi can be sometimes, I don't want to see him die."

Mitchell nodded and said, "Good idea. Still, it would be a damn good idea to warn the other teams to stay far away. It's not worth the risk."

"Of course. We'll inform the others to stay away. And I think we should start some sparring to let him loose some of that aggressiveness. He needs a safe outlet to get out all that extra energy. Wearing him out seems like a good option to me." Anko said.

"Good. Now, we're going to strip him of his clothes and give him a bath, so you might want to step outside for a while." Mitchell suggested.

"Of course. Come on girls, let's go get something to eat. They should be done by the time we return. Okay?" Anko suggested.

Each of the girls nodded, eager to get some grub. However, as they were leaving the room, Yugao eyed Naruto for a moment longer. To think, I almost gave in and let him make love to me. It felt so good! Giggling to herself, she shut the door behind her and followed after the others.

The Next Day

Naruto took a deep breath to try and steady himself. They had enjoyed some spars earlier, but now they were back to the tree climbing exercise. He wasn't entirely focused on the exercise, however. No, he was thinking back on what he had been told last night. This suuuucks. Why the hell do I have to go into heat? All I feel like doing is rutting. I need to find a suitable mate. I almost went all the way with Yugao-chan yesterday. Would she have stopped me? Or…?

Glancing over at Yugao, he saw her chatting with Anko. Would she have truly gone to that point with me? She's so damn hot! I… Seeing exactly where his thoughts were headed, he turned away and shook his head to rid it of such thoughts. No! Focus Naruto. Focus! Climb the damn tree right now! You can do it!

Taking a deep breath, Naruto tried to relax and settle his nerves. After a few minutes, he began climbing the tree, taking it slowly as he began climbing higher and higher. He wasn't rushing it and he wasn't thinking about anything other than climbing this blasted tree.

When he reached the third branch up, he sat down and took a breath to try and steady himself once more. Okay, that's better. But I need to do more. First, let's try some meditation. It might help me calm down enough to really focus on this exercise.

Down below, Yugao smiled as she watched Naruto. Her mind kept replaying the events of yesterday afternoon and she found herself unconsciously rubbing her thighs together. Dammit. What the hell has come over me?! I'm lusting after my own student! I want his hands to roam my body again. Oh Kami, I want him!

Anko saw this and snickered to herself. "Careful that Yugao. You should try to control yourself as well. Naruto-kun's doing his absolute best to get himself under control. You don't want to set a bad example for the kiddos, do you?"

The sword mistress frowned as she thought it over. After a moment, she grumbled and said, "You're right. It just felt so good, though. I still feel all hot and bothered."

"I'm sure. I think you might still be experiencing the effects of his pheromones, though. You sure you don't want to go home and let me handle the kiddies today?" Anko questioned.

Yugao quickly shook her head and said, "No! I'm fine, Anko. Really, I am." Taking a deep breath, she walked over to Saeko, trying to get away from Anko for the time being. "How's your progress coming along, Saeko?"

The swords mistress nodded in greeting before returning her gaze to the tree. "Meditation seems to have helped me. I can now climb the tree to about the fourth branch up. It's still proving to be a tough challenge, but I think I'm starting to get the hang of it. Trying to control my chakra when two forces are essentially colliding together is hard, but not unmanageable."

Yugao nodded in understanding and said, "I can only imagine how difficult it must be. However, you are making great progress. If I knew anything of senjutsu, I would be able to help you with this. Unfortunately, however, there are very few practitioners of senjutsu these days, so finding help would be difficult. Those with summoning contracts can learn sage mode from the clan elders, but that's about it. Just keep practicing and you'll have it in no time, I'm sure of it."

Saeko frowned in thought for a time before nodding in understanding. "Thank you, Yugao-sensei. I will continue working on this. I refuse to give up until I've got this all under control."

"Glad to hear it. I'm going to go see if anyone else might need a little help. Keep up the good work." Yugao said before she turned and began to walk off.

Before she could get very far, however, Saeko gazed at her coldly and said, "You're trying to avoid Naruto-kun." It was a statement, not a question. "I've seen the way you've been gazing at him. And the fact that you keep rubbing your thighs together is quite telling. Please keep in mind what Doctor Mitchell said to us yesterday. That's all I'm going to say."

Yugao blushed deeply but didn't turn to face her student. No, she wanted to go and talk with the other Genin for the time being. Or maybe crawl under a rock and live there until she died. Whatever worked.

Naruto, meanwhile, cast a glance at Yugao's back and thought, She's having just as hard a time of things as I am, isn't she? I can't imagine how she must feel right now. I feel like I damn near forced myself on her yesterday. How are the other girls dealing with this so easily? Yugao-chan and I can barely even look at each other without blushing! Sighing softly to himself, Naruto proceeded to walk down the tree before taking a breath and then walking back up, aiming for the very top this time. You can do this, Naruto! Believe it!

Anko frowned as she looked between Naruto and Yugao. They both want it so bad. It's obvious as hell. I just hope they don't regret it if they begin rutting like a couple of horny ass rabbits. Well, not really my place to decide what they do with their lives. I'm sure they're both confused as hell about all of this. Still, it might actually help them both if they did just have sex. Shrugging at her thoughts, Anko turned her gaze to Naruto and watched as he disappeared into the treetops. He's really pushing himself hard today. Guess he's gotta work out that pent-up frustration somehow. Still, might be a good idea to go up and keep an eye on him.

As she got up to go after him, she noticed out of the corner of her eye as Yugao began to move. Frowning to herself, she decided to just leave them to it. She just hoped that Yugao had some form of birth control, because she was not looking forward to dealing with a pregnant Yugao. I swear, she's like a damned horny teenager. She'd better be serious about this.

As Yugao ascended the tree, climbing higher and higher, she tried to pinpoint Naruto's location. However, the higher she climbed, the more worried she became. Finally, she called out, "Naruto-kun! Where'd you go? Please be okay."

Hearing Yugao calling out to him, Naruto walked down the tree again until he spotted her a little below him. Smiling at her, he pointed upwards and said, "Sorry for worrying you, Sensei. I just decided to admire the view from up there. It's quite lovely."

Breathing a sigh of relief, Yugao joined him up above and hugged him tight. "I was worried about you, Naruto-kun. Don't disappear like that again, okay?"

Chuckling softly, he hugged her back and said, "I'm sorry. But…"

Yugao blinked as she looked into his eyes. "But what?"

Naruto glanced away shyly and said, "Are you sure we should be alone together after what happened yesterday? I don't want to take advantage of you when you only just broke up with that cheating bastard. I'm sure you're still upset and really confused. I know I am. I feel all these urges right now and I'm struggling to control myself. I don't want to force you to have sex with me after everything that's happened lately. Besides, you wanted to wait until you were married before having sex, right?"

Yugao nodded slowly and took a few steps back. "You're right. I'm very confused right now. As for Hayate…I don't know how to explain it. After what happened with you yesterday, I feel like I'm already over the cheating bastard. I feel comfortable with you, Naruto-kun. And…you didn't force yourself on me. I liked what we did. In fact, I desperately wanted MORE of that feeling. Kami, I've been craving you all day! I honestly don't understand what's come over me. But I'm sure it's even harder on you. You didn't ask for this. You are so sweet and charming and you always manage to say the right thing to make people feel special."

Sighing heavily, Yugao looked into his eyes sadly and said, "You're right. I was planning to save my virginity until my wedding night. But…" stepping closer to him, she placed her hands on his chest and leaned in close so her lips were mere centimeters away from touching. "You make me feel special, Naruto-kun. And I know that you would NEVER hurt me. If I were to give myself to anyone, I think I'd like it to be you."

Before Naruto could reply in any way, Yugao pressed her lips to his and began sliding her hands up under his shirt. Feeling his toned body under her fingertips was making her even more turned on than she already was. When they separated, the sword mistress smirked sultrily at him and said, "I just do not care anymore. I want to feel you inside of me NOW. Please? You don't want to keep your Yugao-chan waiting, do you?"

As Naruto went to say something, he watched in a mixture of fascination and horror as she began to disrobe. When she was finally naked before him, he could see her glistening thighs, showing that she was very, very wet right now. And if he wasn't mistaken, he could swear he smelled her arousal. Whatever it was, he found it increasingly hard to resist her. "W-We can't…Yugao-chan. We could be caught at any time. Erm…"

Yugao smirked at him and said, "You're not saying you don't want to do it. You're not denying it in the least. You want me. Just as badly as I want you right now. Don't try to fight it. Give in and make me yours. Ruin me for any other man."

Naruto blushed deeply and tried to focus, but the more he looked at her and the more he thought about it, the more he lost control over himself. Finally, he removed his clothes and pulled her flush against him, his member resting against her stomach. "Once we do this, we can't take it back. Are you absolutely sure this is what you desire?"

Yugao's answer was to kiss him deeply and grab hold of his rock-hard penis. Without a word, she moved it so it was positioned properly. "Make love to me, my wonderful Naruto-kun." And with that, the two lost themselves to their passion.

A/N - And that's the chapter! As you can see, Naruto is experiencing heat like certain animals do. He's having a really hard time controlling himself, and both he and Yugao lost themselves in the passion of the moment.

There was also some training and testing out their chakra affinities and whatnot. I was hoping to get to the first C-rank mission for the teams, buuut I couldn't manage it in this chapter. Soooo, hopefully we can delve into that in the next chapter. Still, I like the way this chapter turned out. Hopefully you enjoyed it too.

Anywho, I really need to take a shower and at least attempt to get some sleep. Got stuff to do today, so getting some rest would be very nice. lol. And once again, I have no idea what I'll update next. XD