He couldn't remember second for second what he had done. But he saw action for action the consequences of it.

Sawada Tsunayoshi – Dame-Tsuna, No-Good Tsuna, Useless Tsuna – hid around the corridor from where three very concerned girls were cornering one popular, sports freak Yamamoto Takeshi.

"You look so pale, Yamamoto-kun, are you hungry?" the first asked.

"A little," Yamamoto answered, skin nearly as white as his ever present smile.

"Your eyes are really dark today, Yamamoto-kun," stated the second. Then she added, "They're really red. And you look really tired."

Heavy purple bags weighed down on the baseball star's eyelids. "You don't have to worry about me," said Yamamoto.

"Did you hurt yourself, Yamamoto-kun?" the third whispered, staring pointedly at the white bandage held against Yamamoto's jugular with medical tape.

Yamamoto laughed. Then he turned his head and stared at him, as if he had known he was there the entire time. "Hey, Tsuna!" He disengaged from the gaggle of girls and came towards him. "I've been waiting for you…"

The small brunette tilted his head down as the three girls began to whisper and glare at him.

"Dame-Tsuna," said the first.

"He shouldn't bother Yamamoto-kun," growled the second.

"Freak," spat the third.

If Yamamoto heard them, he ignored them as he loped an arm around Tsuna's shoulders, dragging the smaller boy against his side. He tilted Tsuna's chin up with one hand and held him there as his lips descended over his, plying his mouth open and slipping in.

The three girls were cast into horror before making a quick, heartbroken retreat.

It was minutes before the sports star pulled away, a wisp of gold following him as he tilted back and his scarlet eyes closed. His skin gained back its bronze hue. The heavy bags under his eyes lightened.

Tsuna's face hid in Yamamoto's shoulder, weak in the knees and hands shaking. "I'm sorry."

Yamamoto laughed. "Don't worry about it, Tsuna. You did what you had to do." He held an arm around Tsuna's waist, supporting him. "Let's get to class, okay?"

"Okay…"

~::~

Tsuna was an abused boy by the time he got home that night. Littered with bruises and scratches, he limped up the stairs to his room.

No one had taken kindly to him and Yamamoto being an "item". Little did they know.

His forehead cracked tiredly against his door as he tried and failed to open it with clumsy hands. He was drained in more ways than one, exhausted. The skin was peeling off his nose and cheeks and across the back of his hands.

That was what he got for forgetting to put on sunscreen before leaving that morning.

The door opened, sending him stumbling forward, and for a moment, he thought he had finally succeeded. Then he landed against a hard chest where a heart beat slowly, almost lethargically, against his ear. His hands came up and fisted in the fabric covering said chest, the scent of dirt and sweat and cotton assaulting his nostrils.

"Mah mah, you look tired, Tsuna." Fingers tangled in the hairs at the nape of his neck, pulling him back so that he was forced to meet scarlet eyes. Deep, dark scarlet eyes. "And hungry." He laughed. "This isn't good, I'm really hungry too."

The small brunette swallowed thickly. "It's okay. I'm just not used to sharing, so… It's really okay. Just take what you need and I'll be fine."

"I don't know, you look like you don't have much to give."

He could deny it all he wanted, but they both knew it as the truth. So Tsuna looked away from Yamamoto and blushed as he told himself that any sacrifice was worth it for the sports star. After all, it was all Tsuna's fault he was like this anyway. "There's another way to f-feed…"

"Why do you look so embarrassed?"

"B-because I've never fed… that way before. M-much less fed someone else like that."

"Wow, this sounds really interesting. Are you talking about this way?" He touched the bandage across his throat.

"I-I don't have good blood t-to give." Tsuna gulped and reached for his sweater, unbuttoning it. "There's o-one other way."

"Whoa, Tsuna! What are you doing?"

"M-my tutor told me that there is a-always one foolproof way t-to get sustenance." His caramel eyes lightened impossibly, like Yamamoto's had darkened, and caramel became tangerine. "Sexual energy."

~::~

Tsuna was confused. He had never had sex before, had never even thought about having sex before, though he had had some perverted moments where he had glimpsed up a girl's skirt or watched a guy change in the boy's locker room. Things like physical pleasure had never dawned on him.

"H-haaaa! W-what's g-g-going onnnn…?"

His dad said it was because he was a late bloomer.

"Y-Yama – Nnnnn!"

His mom said it was because he was waiting, without he himself knowing, for his most special person to come along and whisk him away like a fairy tale prince (or princess)!

Hands glided up from his waist to simultaneously catch in his sweat-slicked hair and hold his chin in place as a hot mouth slid over his like two puzzle pieces coming together, tongues batting, no taking or giving involved except for something instinctively carnal, addictive, musky –

His tutor said it was because he was such an idiot, even his body was too stupid for its own good.

He had to rip away as something inside of him was attacked, nails leaving long, deep red furrows across Yamamoto's back and shoulders, screaming. He was blind, blind, deaf, what? SO GOOD –

Maybe he had needed to have sex to start thinking about sex.

"M-more! Please h-hit that spot m-m-mmmmm!"

Because, suddenly, it was all he could think about.

Yamamoto's smirk was hindered, or maybe enhanced, by sharp fangs sticking over his bottom lip, eyes glowing down at him, and he answered sweetly, with an answering blush and stammer of his own, "I-I've got m-more to g-give! TSUNA!"

Tsuna rested his hot face against the surface of his cool desk. He had said and done a lot of things last night he wasn't sure he would ever be able to forget. His tutor said that having sex for sustenance was no big deal – after all, plenty of people had sex constantly for no good reason. It only became a big deal if they ended up becoming mates.

Yamamoto lazily drifted pecks and kisses down his jaw and throat to the slope of his collarbone, his one arm Tsuna's pillow and the other stroking his side. They were heavy and full, both healthily glowing, in the aftermath of what had just happened.

But he couldn't imagine having anyone else with him like that… At the same time, he knew he couldn't have Yamamoto like his dad had his mom. It wasn't fair to the other teen! Tsuna had already taken so much from him, he couldn't monopolize his sex life too.

"I like this way of feeding," Yamamoto hummed as Tsuna blinked drearily up at him, halfway in and out of sleep. "This makes me happy to be hungry all the time!"

Besides, no matter how often Yamamoto tried to assure him, Tsuna knew the sports star had to hate him somewhere deep in his heart. So the chances of them falling in love were about zip to nothing. It was impossible to be mates if they didn't care deeply about each other.

Yamamoto laughed. "Now that I'm thinking about it, I'm getting hungry right now." He rolled over till he was on top of Tsuna. "Can I eat you again? Please, Tsuna, Plleeeaaaassseee?" He widened his eyes and quivered his bottom lip playfully at him. "Feed me, please!"

"HIEE –" he slapped his hands over his mouth as the other students and sensei turned to look at him. "S-sorry…"

Sorry wasn't good enough, apparently.

The sensei scolded him for fifteen minutes, demanded that he come after school for a detention, and then gave him twice as much homework as everyone else in his class. It wasn't till he dismissed Tsuna in a huff that the small brunette could turn his attention to the source of his scream.

Yamamoto was so deep down his throat, he couldn't breathe. The sports star was trying his hardest to stop himself from choking him. Tsuna could feel his struggle, thighs trembling and abdomen tight with tension against Tsuna's small hands –

He pulled out his cell phone from his front pocket – the culprit – and immediately, before anything else, turned off vibrate and put it back on a mosquito ringtone.

Fair play – Yamamoto supported it. The tight heat around Tsuna's penis made him want to climax right then and there. Hands tangled in Yamamoto's hair. Biting down on his bottom lip, he had to hold it, hold it, HOLD IT –

Then he checked his messages.

1 message received

Click.

September 3, 20XX 12:42 AM

Text from Yamamoto Takeshi:

im hungry! :DDDD

Meet me rftop plz

Tsuna's face grew hot and his legs were suddenly too weak to hold him up. He stumbled and fell against the nearest wall, avoiding looking up at a group of teens passing him by.

Yamamoto ran his tongue over his mouth, a drop of seed just outside its reach, as he glowered predatorily up at the panting, exhausted Tsuna. "Let's do that again."

He had to wonder – he would be a fool not to wonder – if he was going insane. This didn't feel like it was "no big deal", so shouldn't he stop it before something bad happened? But then it didn't matter, because he owed it to Yamamoto to give him what he needed without complaining.

Yamamoto had to carry him to the bathroom and wash him off before setting him down in the tub, on his lap, as the raven-haired teen simply didn't trust him to not pass out in the water and drown himself. Then his hands began to wander and Tsuna knew they weren't done.

He limped all the way to the rooftop, feeling uncomfortably hard and his insides were turning to mush. Yamamoto was already there, looking up at the bright, clear sky through sunglasses. His nostrils flared before he turned his hidden eyes on him and a slow, perverted smirk spread his lips.

"I want more," Yamamoto whispered into his ear. "Can I have more?"

"Hey, Tsuna! Can we do this that way we did last night?"

And Tsuna croaked, after hours of screaming and groaning and moaning and keening and whining –

"Y-yeah..."

Because he couldn't say no. If this was what Yamamoto wanted, then he wouldn't deny him anything.

~::~

"You look better than ever." Lambo Bovino – Italian. Use: Catalyst. He popped open a bag of skittles and dumped them all in his mouth at one time. A thin trail of juice seeped out of the corner of his lips.

"Well, I've been getting sustenance regularly now…" Tsuna squirmed. His mind swam with images from the five hours spent on the school rooftop just that afternoon.

The Italian swallowed his sugar dose and raised an eyebrow at him. "Have you now? Do I want to know?"

"No! I mean, n-no. It's not anything bad or something like that."

"Of course not."

"I mean, Reborn said I had to start building u-up my own family, so i-it's not like it's wrong."

"You doing something wrong? Impossible."

"It is impossible! No one's hurt or mad or, or wants to take a stake to my heart."

"That would be bad if someone did."

They stared at each other for a long moment.

"You want to talk about it?" Lambo's glowing green eyes, impossible to read and yet they so easily read others, saw right through him.

He tried to hide from those eyes behind his wild head of hair, hands tugging at his bangs, trying to block his face. "Not really."

The catalyst discovered grape mints in his cow-print jacket. "Then we might as well get this over with. Yare, yare, I remember the good old days when people said what was on their minds…"

"You're only fifteen," Tsuna pointed out dryly.

Those glowing green eyes pinned him down where he sat. "Are you sure?"

These days? Tsuna couldn't be sure of anything.

Lambo got to his feet and stood over him, dipping down so that his mouth was centimeters over his. "Just take what you need, fledgling."

"I'm worried about taking too much."

"That's why I'm a catalyst. There's no such thing as taking too much. Haven't we already gone over this?"

They had, many times. But Tsuna couldn't get over the fear that he would pull away and Lambo would drop to the ground, never to get up again.

"Besides," Lambo held up the grape mints, one among countless number of teeth-rotting sweets on his person, "I've got my sugar to keep me going." He smiled gently. "So just take."

Tsuna closed his eyes and did as he was told.

At least, this way, he could give Yamamoto more the next time he saw him.

~::~

Outside of sustaining Yamamoto with his body and other life essences (but not blood), something weird began to happen.

Tsuna had a bad feeling the moment he ran out his front door, late for school, and saw Yamamoto waiting idly for him against the gate. "Yamamoto-kun?"

"Tsuna!" The sports star gave him a brilliant smile. "You're late! Mah mah, I don't think we're going to make it to school on time now…"

Despite his bad feeling, it was overcome by something stronger – complete and utter joy. He had never had someone wait to walk with him before.

Two days later, though, that bad feeling came back, stronger, clutching at him like sticky fingers wrenching on his gut.

"Yamamoto-kun, don't you have practice today?" They were walking through the park, Tsuna's face red as Yamamoto contentedly swung their hands (why were they holding hands?) between them.

"Mmm? Oh, yeah, that!" He laughed. "Yeah, but I wanted to spend more time with you."

He was touched. Then he was scared. "Have you noticed that you've been getting kind of…" How could he say it without sounding mean?

"Kind of what?" Yamamoto blinked naively down at him.

"Kind of obsessive?"

The raven-haired teen thought about it honestly for a moment. "Wow, you're right." He slouched his shoulders and his eyes lost their lively hue. "Have I made you uncomfortable, Tsuna? It's just that I feel like I have to be with you all the time or else you won't be there when I turn around… Isn't it sad? It's like I'm a baby or something like that." He laughed again, without humor.

Horror grabbed Tsuna's soul with thin, icy hands. That was exactly what Yamamoto was – a baby. Fledgling. Tsuna's fledgling. Tsuna had made him like this…

"Tsuna? Tsuna! I'm sorry, did I upset you? I didn't mean to!" Yamamoto wiped the small brunette's face with his sleeve. "I'm sorry."

It was too late to stop the tears, though. He gazed up at Yamamoto with all the pain and regret and guilt he felt, stopping the sports star dead in his tracks. "I-I'm sorry t-too. That I-I made you like this."

Strong, warm arms came around him and squeezed him to Yamamoto's thick chest. "Don't be. It's not that bad, heck, it's even better! I can smell more things, my hearing's great, I'm faster, stronger, and I can see a lot further! And I get to be with you; I think that's the best bonus of all."

Tsuna closed his eyes and cried as quietly as he could. "I'm sorry!"

"I don't want you to be."

"I'm sorry…"

"I'm not."

"I'm sorry."

Yamamoto pressed a kiss to his forehead. "Okay, Tsuna. I forgive you."

Tsuna didn't believe him.

~::~

Tsuna had learned that he could manipulate Yamamoto back into his usual schedule through the simplest and most heartbreaking of ways –

Just by being there with him.

"I want to watch you play baseball."

Yamamoto's head whipped up like a dog on the scent of bacon. "Really?" Math homework forgotten, he turned himself towards Tsuna with the biggest, goofiest smile on his face that the brunette had ever seen. "I never took you for someone who liked sports!"

"W-well, it's not that I don't like them, it's just that I'm not good at them." As he wasn't good at many things.

"It's okay, Tsuna, I'll teach you!" He laughed delightedly. "This is going to be a lot of fun. C'mon, let's head down to the baseball field right now."

There was no stopping him.

Not that Tsuna tried.

The next Tuesday, Tsuna was in the bleachers, breath leaving smoky trails in the cold air, gloved hands tucked close to his body, as Yamamoto, dedicated as he was, trained for the upcoming baseball season with his team.

His team wasn't sure why Tsuna was there, but as long as it meant that Yamamoto was back, none of them were questioning it. Instead, the small brunette got plenty of dirty looks, like their star player's absences were his fault.

Tsuna's bangs hid his guilt-ridden gaze. They were right. It really was his fault. But he was trying to make it better in the few ways that he could.

"Tsuna!" Yamamoto was waving at him when he looked up, beaming with pride and something almost animalistic, something that made the tilt of his smile exceedingly sharp at the corners. Tsuna couldn't name what it was, but he knew he didn't like it. "Watch me, okay?"

He pushed his less than comforting thoughts away. "Okay!"

By the end of training, everyone was looking at him differently.

"You must be sempai's lucky charm!" said one of the younger players. Four others nodded in agreement.

Tsuna flushed. "Why do you say that?"

"Well," began another one, "Yamamoto-san was already our best player. But now he's even better! We can't lose when he's this strong and determined!"

The two that had spoken and five others bowed to him. A third voice cried, "Please come to all our baseball games so kohei will be undefeatable!"

"PLEASE!" screamed them all in unison.

The small brunette scratched the back of his head shyly. "Um, o-okay. I'll try to be here as often as I can."

He might as well have handed them each a wishing star for how they looked at him, like dreams really did come true.

"Mah mah," said a familiar voice in an unfamiliar tone. Yamamoto was exiting the boy's locker room, hair still damp from his shower and equipment bag cast over his shoulder. "What's going on here?"

Tsuna thought that there was, perhaps, or his eyes were fooling him into seeing, jealousy in Yamamoto's darkening copper gaze.

But the team didn't notice because Yamamoto still wore that insanely sloppy grin and looked relaxed enough to take a bullet to the shoulder and still laugh it off.

"No-Good – I mean, Tsuna-kun said he'd be coming to all of our games!" cheered one player. "So make sure to always try your hardest like you did today, kouhei!"

"Eh? Really?" The jealousy was gone, if it had ever been, and his smile grew impossibly bigger. "That's great!"

Tsuna rubbed his gloved hands together, looking down. Something about this wasn't right.

Something was wrong with Yamamoto Takeshi.

~::~

Yamamoto's room was small. There was a bed to one side and a small TV to the corner of it. Sports posters were overlapping and competing with each other on the walls, so many in number that faces and games blurred together just by looking at a section of it. Hanging from a rack were four different equipment bags, tags sowed into their fabrics reading off, in order, SOCCER, VOLLEYBALL, TRACK, and then BASEBALL.

There was also a closet. Though it took Tsuna a moment to find it.

"Do you like it?"

"HIIEE! Y-Yamamoto-kun!" He was getting so sneaky! "You're back… with… sushi."

Yamamoto laughed. "Yep! My old man said I had to feed you while you were here. I don't have many friends over, so he's really excited. Especially after meeting you." He looked down at him with warm eyes. Tsuna was confounded by the emotions he saw swirling there. "He thinks you're a pretty cool kid!"

"R-really?" Tsuna was touched. Yamamoto might have not had many friends over – but Tsuna had never been over anywhere. Kids never seemed to like him, so they never bothered taking him over to their houses or introducing him to their families. "I think he's pretty cool too." Then he blinked, because he thought he saw something weird.

He stared and realized that he hadn't thought so, but had. Yamamoto's grip on the food tray was leaving dents in the aluminum. His usually jolly grin was strained. "But not as cool as me, right?"

Tsuna had a moment of clarity – but it was gone before he could figure out what it was clarity of. The tray of sushi dropped to the ground and Yamamoto stepped over it on his way to him, grabbing him by his butt and lifting him up against him, grinding their manhoods together as he made a quick detour to the bed.

Tsuna never got the chance to answer the question.

Yamamoto didn't ask again.

~::~

Author's Note: MORE TO COME. Mwa hah hah hah!