A/N: This chapter ended up getting way steamier at the end than I expected, so if you don't particularly like those scenes I'd say skip it. Next chapter will be Izuku and Himiko VS The Hero Killer, so we'll be seeing a lot of action.

I hope you enjoy!!!

"Regular speech,"

"Flashback speech,"

'Inner dialogue,'

'Phone Text Chat'

Izuku clutched his chest. His heart was hammering a million miles, and he tried desperately not to have a heart attack, "h-hello, sir. I'm Izuku Midoriya, and this is—"

The old man got to his feet and brushed off the costume that had gotten dirty," to slip and fall while carrying ketchup-covered sausage links… how clumsy of me." He slowly looked at Izuku and then Himiko, "Who're you?"

Himiko laughed, and Izuku just bemoaned his luck, 'Oh my god, I think he's senile!'

"I-I'm Izuku Midoriya, sir! I've come from U.A.!"

He stared blankly. "What?"

"I said, I'm Izuku Midoriya!"

"Who're you?"

'He was All Might's teacher, so I knew he'd be old… but really?!'

Gran Torino, the man All Might was terrified of, plopped down into the mass of ketchup and sausage links, "I'd like to eat lunch."

Izuku sighed, left his case beside the aging hero, and waved back at Himiko, "Hey, Himiko. Could you watch him? I'm going to call All Might real quick."

Izuku turned away but heard the latch on his costume case snap open, "Fire off an attack! Show me how you use One for All."

The old man's gaze suddenly sharpened. "I'd like to know to what degree you can control it."

"W-Wait! You want me t—"

"You've got a nice costume here. Put 'er on and come at me!" He looked at Izuku, his gaze sharp and his face serious, "who are you again?"

Izuku slammed a hand into his forehead and went for the door, "Okay, that's it. I'm calling All Might."

Something behind and above him made a thumping noise, then to his right, and suddenly, Gran Torino was perched above the door, staring down at Izuku with a sinister grin, "I'll tell you only one more time! You better come at me, you neophyte!"

Gran Torino's fingers were embedded in the wall above the door, and the place his feet had landed was cracked, "the way you used One for All at the Sports Festival wasn't bad, but you're too rigid. I thought All Might would make a terrible teacher; it seems I gave him too little credit. That being said, you're still not using One for All like it's yours."

Izuku frowned, "what do you mean?"

Gran Torino observed him, was satisfied that Izuku wouldn't walk out of the door, and jumped down, "Don't get me wrong, you're leagues better than I thought you'd be with All Might as your teacher, but you've got no creativity. You fight head-on, when that isn't the best option, you just keep doing it. You had some ingenuity when fighting, you even put up a decent fight against the Todoroki boy, but that's not even considering that shit show with the blond kid. When push came to shove, you just destroyed your body in the heat of the moment, sacrificing an arm, and when you fought again, you used the exact same arm, and it ended up useless the rest of that fight. That was more like what I'd expect from a student of All Might. It makes me wonder if you've had some other kind of training."

Himiko stepped forward, drawing the man's attention, "Hi! Yeah, that'd be because of me! I'm Izu's other teacher."

Gran Torino studied her with a critical gaze, "Ah, so you've been learning from this psycho, huh?"

Himiko's smile didn't waver, but Izuku stepped forward angrily, "Don't call Himiko that! She's been helping me since I started training to be a hero! Himiko is—"

"She's a nutcase, plain and simple. Don't think I was fooled like everyone else, after her match with that glasses kid, she fully intended on ripping his throat out with her teeth. If you hadn't noticed something was wrong she would've murdered him."

Izuku couldn't deny what he was saying, and if Izuku hadn't been observing the fight, it could have ended horribly.

But…

"It wasn't entirely Himiko's fault. After how hurt I was after defending her during U.S.J., she refused to take blood from me, and her quirk makes her reliant on a frequent supply," Izuku scowled down at his palm. "Ultimately if I had been stronger, she never would've needed to worry about taking it from me, and she never would've been driven so far to the edge."

Himiko came over, putting a comforting hand on his shoulder, "Izu, it isn't your fault. You tried helping me before the Sports Festival, but I kept putting it off. Gran Torino isn't wrong. I could've killed Mr. Glasses, and I ended up hurting you after you stopped me."

Her fingers slipped under the collar of his shirt, and they traced along the bite on his shoulder, Izuku shuddered.

"Ugh, you're both so insufferably in love," Gran Torino got between them and whacked Izuku on the shin, making him yelp," but I suppose if you're both willing to reflect on your mistakes, then I guess I could try training the both of you."

"Huh?" Himiko looked just as surprised as Izuku. Wait, you want to train me, too?"

Gran Torino grinned dangerously, "I've got you here. I might as well, and besides, it's been ages since I've been able to beat up more than one brat at a time. Now stop gawking and put your costumes on."

Izuku's beta costume was much sturdier than his original, but that was to be expected. After all, his mom had sewn the original, and Himiko had supplied motorcycle pads for armor; it hadn't exactly been high-tech.

The arm and leg armor was less hard plastic and more a lightweight but hard black metal; the armor on his arms covered just his forearms, but the leg armor protected a bit more, primarily his shins and knees. His gloves were fingerless, and the same black metal was protecting the back of his hands. The chest armor covered from just under his collarbone down to mid-torso so that he would have a full range of motion. And the mask had been converted into a cowl that hung down his back with a metal face guard.

The support company that modified the costume seemed to have decided they liked the color and pattern, because the armor was black with dark green lines, while the suit fabric looked to be a carbon fiber colored a deep forest green with black lines. Of course, Izuku wore his regular bright red sneakers instead of having some designed for the costume.

Gran Torino whistled, "Gotta say, those are some pretty snazzy costumes. Though yours looks a lot more villainous, crazy girl."

After Izuku had made sure his costume was on correctly, he approached Himiko and got a closer look at hers.

Himiko's costume was strange. It looked like a dress made of a blood-red velvety material, but when Izuku looked closer to test the quality, he found it surprisingly thick.

'I bet this could stop at least a knife swipe.'

Looking closer, Izuku noticed that Himiko had four black bands ringing her arms and legs that looked like they were made of lace. She wore one on each arm around the bicep and one around the thigh on each leg. Tucked inside each were at least five or more small but clearly high-quality throwing knives.

On Himiko's delicate hands were a pair of black elbow-length gloves. The tip of each of her fingers had pitch-black metallic nails, so finely sharp they might as well be syringes. When Izuku inspected the inside of the gloves, he could see each nail connected to an internal hose, whose function was obvious—but only to him. They were meant to siphon blood, and now that Izuku traced the hoses, he saw they snaked up the glove, along Himiko's arm, down her torso, with each individual hose depositing into vials ringing her waist, fastened into nearly indistinguishable, sewn-in holsters.

Himiko fidgeted, half hiding her wide blushing grin behind her hands, "You're such a pervert, Izu!"

"W-What?! N-No! I wasn't— I mean, I didn't—"

She giggled again, slapping him on the back, her sharp-clawed fingers digging into his back, "I'm just messing with you!"

'Of course she was.'

A clawed hand snaked along his ribs and another down his stomach as she purred in his ear, "You don't look half bad in that costume of yours either."

"H-H-Himiko! Stop! G-Gran Torino is still here!!!"

The pair looked over to the man.

He stood hunched over, supported by a cane, his entire frame shaking like a frail old man. "Who're you two?"

Both of them looked at him, unsure if he was messing with them or just senile.

Suddenly, the old man's cane was standing by itself, and Izuku was slammed into the ground from above by a small but insanely fast object. Then Himiko narrowly blocked a foot to the face as Gran Torino shot toward her, "I'm getting impatient! You two had better start shaping up, or this won't be any fun at all."

Himiko swiped at him with her claws, but in another second, he was shooting away and up into the ceiling, where he bounced back down at Izuki, who still hadn't recovered.

Izuku rolled to the side, barely avoiding a kick to the head, "You're a bit slow on the uptake, kid. Your girlfriend's got the right idea. She's at least blocked and attempted an attack, but you've barely managed a single dodge. Honestly, I'm disappointed! All Might chose such a wimpy guy to be the ninth wielder; what a fool!"

Gran Torino shot away, bouncing off one of the walls, then the ceiling, another wall, and attacked Himiko from behind. She wasn't caught off guard this time, and her claws came even closer to cutting the old hero.

Somehow, he managed to dodge and redirect himself toward Izuku.

Eight percent of One for All flooded him, and Izuku tensed the muscles in his forearms. He sprang feet first at Gran Torino.

"That same move you used on the blond kid? Please, give me more credit than that!"

Gran Torino twisted, avoiding the kick to the jaw, but that hadn't been Izuku's intention in the first place.

'All his bouncing around gave me an idea.'

Izuku shot feet first at the wall. As his feet made contact, Izuku had a split second to find Gran Torinos' trajectory, and he shot right for him.

"Oh? So you fancy yourself a copycat, huh?" Gran Torino pivoted, lunged from his position on the wall, and slammed a foot into Izuku's face, "Too bad you aren't used to these kinds of maneuvers, ya damn brat! Now stay down, and think about what you learned."

Gran Torino shot away from him and toward Himiko.

'Think about what I learned? I just… used One for All for maneuverability in a tight space and copied Gran Torino's movements. Is it that easy? Just use it in ways other than just for a strength boost? Is it that easy?' Izuku sighed, 'Who am I kidding? I'm the dense idiot who had to have his girlfriend teach him I could attack with my legs and not just my fists.'

"And you," Izuku looked over, and when he did, he nearly had a heart attack. Gran Torino was at least three times faster than when he'd been focusing on Izuku, but somehow, Himiko was keeping up, "Your reflexes are good, and you've got a good grasp on spatial awareness, but you treat every fight like a game. Honestly, you don't have much I can teach you."

"Then I guess you can focus on Izu. That's fine with m—"

Gran Torino planted his feet into a wall as he landed, but instead of shooting forward immediately, he seemed to brace himself. And then he was right in front of Himiko, slamming her face into the ground, "Aside from discipline, that is, but if I can beat it into that dense idiot All Might, then I'm sure I can get it through your thick skull."

Himiko stared up at the ceiling. Her costume was packed and neatly folded back in its carrying case. The spare room she was in was pretty barren, aside from a simple twin-size bed and a desk to work at.

The rest of the day had gone relatively poorly for her and Izu. The old fart had raked them both over the coals, and worst of all, even when they'd fought him together, the old guy had soundly beaten the crap out of them.

'This sucks!' Himiko punched her lumpy pillow, pretending it was that geezer's wrinkly face. Her hair, out of its usual messy bun style, splayed all along her pillow.

For long, suffering seconds, Himiko tried in vain to fall asleep, but all she could do was toss and turn.

Then she had a great idea.

'I'm gonna go sleep with Izu!'

She hummed to herself, throwing the flimsy sheets to the side. Her bare feet tapped lightly against the ground as she made her way out into the hall.

The building during the day wasn't anything special, but at night, it was downright creepy.

'Ugh, this old guy's got one creepy office/apartment.'

If she remembered right, that old fart told Izu his room was two doors down from hers across the hall.

Sure enough, as she pressed her ear to the door, she could hear the telltale scratch of a pen on paper. Izu was probably staying up late writing notes, analyzing what they could've done better, and coming up with combination attacks they could try out.

She smiled to herself and knocked softly on the door, "Izu," she whispered, "it's me! Let me in."

The sound of pen on paper disappeared, and she could faintly hear the soft tapping of his feet on the floor as he approached the door and opened it.

He looked haggard and worn out; his t-shirt was rumpled, and he had bags under his eyes.

"Whoa, you look terrible," Himiko giggled and sauntered inside to sit on his bed.

Izu made a sound that was halfway between a laugh and a huff, "Well, we kinda got the floor mopped with us."

"And what do you think you're doing?" Izu looked down at her with a strange light in his eye.

Himiko immediately knew what that look meant. A large teasing grin spread across her face, "Izu~."

All fatigue seemed to leave his body as he stood at attention, "Y-yes!"

The dim light of the desk lamp barely illuminated them, but her eyes worked far better even in the dark, so she could see the blush that spread across his face. Every freckle stood out against bright red, and the thought of all the blood rushing behind his cheeks excited her.

"Come over here," Himiko beckoned him closer, her heart racing.

He stepped forward slowly. It looked like he wasn't sure if she was messing with him or actually wanting to do something.

Himiko rolled her eyes and grabbed him by the shirt.

"W-Whoa!"

Izu's frame engulfed her. He was so much bigger than she remembered, or maybe he'd just grown since the last time they'd done naughty stuff. It had been a while, after all.

Himiko pulled the collar of his shirt down and traced the bite mark on his shoulder with her tongue. The wound had been closed by Recovery Girl a week ago, but he shuddered all the same as her tongue lightly grazed the flesh.

She wanted desperately to sink her teeth in, and if the way he fidgeted was any indication, so did he. As her teeth met the soft flesh of his shoulder, she hesitated.

'Will he be okay? I won't hurt him, right?'

Izu's hand brushed lightly against her cheek; the rough calluses of his hands felt oddly good. "You don't have to stop. I'm okay."

Her heart fluttered strangely, and her face grew hot. Her teeth sank in, and the warm, sweet flood of his blood filled her mouth. She gulped greedily and hummed as his fingers combed slowly through her hair.

"I like your hair when it's down; it's pretty."

Himiko pulled her fangs from his shoulder and shot an arm's length away from him; for some reason, that had really flustered her. She fanned her face with her hands, "S-stupid Izu! Don't say weird things out of nowhere!"

He smiled gently at her, the blood on his shoulder spilling down and staining his shirt, "you're shy about the weirdest things."

"S-Shut up! Take that off!" Himiko tugged on the hem of his shirt, lifting the fabric over his head.

His bare torso wasn't a new sight to her, but he looked more muscular than she remembered. She ran a hand along his chest, down his stomach, and along the hem of his shorts.

"H-Himi-chan," he panted, his breath coming in quick sharp puffs.

Himiko reached behind his head with her free hand and pulled him into a kiss. She traced a tentative tongue along his lips and was delighted when he opened his mouth to her without hesitation. Her tongue twirled lazily around his, savoring the feeling and taste of his.

While they continued the kiss, Himiko let her hand drop from the back of his head down to his broad back, but she felt something. Something odd.

Himiko pulled away from the kiss, confusing Izu as she turned him around to get a better look.

There, on his back, was a long, rough scar she hadn't noticed before. It ran from his left shoulder blade down to just past the middle of his back toward his right hip.

Izu's hand brought hers back around so that he could kiss it, "that was from when Nomu was slamming me into the ground during U.S.J. Recovery Girl said the wound was too deep to be healed completely."

Himiko couldn't meet his eye. She had been too weak to help him back then, and if he had died, she would have had no one to blame but herself.

'Why can't my quirk be more useful? I hate this stupid quirk.'

Izu took her chin between his index finger and thumb and moved her head to look up at him, "I'm the one responsible for this scar, Himi-chan. I was the idiot who attacked Nomu when I knew just how strong it was."

Izu pulled her closer, and this time, he was the one who took charge during the kiss. His tongue traced hers, his hands gripped her waist, and he pulled her into his lap. He took her bottom lip and sucked on it, eliciting an involuntary moan from her.

"I-Izuuuuuu," Himiko groaned, grinding her hips against him and wrapping her legs around his waist.

He grinned cockily down at her, "I thought you said no fun for three weeks. It hasn't even been two yet."

She didn't know when Izu had gotten so assertive, but it definitely wasn't half bad. But…

Himiko pounced, pinning Izu's hands above his head. Of course, he could overpower her; after all, he was stronger than her now when it came to raw strength, but he seemed content to let her lead.

"I changed my mind," Himiko planted trails of hickies along his lower jaw, neck, and shoulders, leaving him a red and panting mess; all the while, she ground her hips against his hard length, "and that's for acting cocky."

She was acting tough, but she was just as hot and bothered as him, maybe even more so. Izu was practically a saint when it came to patience, but she had never been one to hold back, so Izu's punishment slowly made her crazy.

Himiko pulled her shirt over her head, exposing her breasts to the cool air of the room, and Izu's hands seemed to shoot up instantly to start kneading the soft flesh. His fingers sank into her supple breasts and massaged them, and the heat of his hands slowly started driving her wild.

"Izu~" Himiko growled, bringing her teeth down to sink into the mark on his shoulder; her mark. She tugged at his shorts, and his hands fumbled to remove hers.

"Himi-chan, I-I want to—"

"Me too," Himiko panted between kisses.

Their shorts were thrown to the side and quickly forgotten. Himiko slid along the length of his throbbing erection, the heat of his shaft exciting her. Izu's hands gripped her hips with trembling fingers; his face was completely red, and he looked like he was on the verge of just thrusting it in.

Himiko raised her hips and positioned him at her entrance. She slowly lowered herself on his shaft, letting the sensation fill her; more and more, his member pushed deeper and deeper until, finally, he was all the way inside.

"Ugh," Izu groaned, and his fingers trembled as she went to lift up, "h-hold on! It feels too good. If you move now, I'll—"

"It's fine, just cum," Himiko leaned down to whisper into his ear, "We aren't stopping at one anyway."

Himiko pulled his shaft out halfway, slammed down, making a very lewd slapping noise, and then she repeated two more times before Izu's hips started to thrust upward on their own.

"H-Himiko! I'm cumming!"

His hips pumped furiously, making her brain go fuzzy and her legs turn to jelly. Izu pushed forward, putting her on her back, lifting her legs so that they rested over his shoulders, and with one more hard thrust, he released. A molten heat flooded her insides, and the sensation sent stars into her vision.

Himiko panted. She hadn't cum, but the sensation had been intense, and if he had gone a few seconds longer, she definitely would ha—

Izu started to thrust again, his member hard and his muscles tensing as he steadied himself.

"I-Ishu?!" Himiko slurred his name as she was brought closer and closer to the edge.

"Y-You said we weren't stopping at just one, so I'm just listening to what you said," Izu slammed his length in and out slowly and agonizingly. "Besides, I'm just as pent up as you, and this is payback for all that training you made me do."

Himiko tried to muster up indignity at that, but all she managed to do was moan into Izu's shoulder as he put her legs down around his waist and pulled her up so he could thrust deeper inside. Sweat and the sweet smell of sex filled the air around them, and the way his muscles tensed as he held her up made her dizzy.

Himiko could feel her orgasm coming closer and closer with every thrust as Izu slammed into her. The steady rhythm and sound of their sweat-covered flesh colliding made her feel strange. Her head was spinning.

"I-Ishu!" She slurred his name again, feeling her orgasm coming, "I'm gonna c-cum!"

Izu pumped away; his breaths came quicker and quicker until, with one last grunt, he came again.

Himiko nearly screamed as stars exploded in her vision, but she narrowly managed to sink her teeth into the mark on his neck, muffling her cry. The amazing sensation of her orgasm was doubled in pleasure as she swallowed greedy mouthfuls of his blood down, and he lightly bit into her neck.

She shut her eyes as she enjoyed the moment.

"H-Himiko," Izu panted, pulling his teeth away, cradling the back of her head with his right hand while steadying them on the bed with his left, "I'm a little… tapped out."

Himiko's eyes fluttered open, and she slowly unraveled her legs from his waist. "I'm sorry. I got a little carried away."

Izu laughed, "Yeah, me too."

They both lay on his bed, not caring about the stains covering the sheets beneath them. Himiko rested her head on Izu's chest, enjoying the feeling of his fingers combing through her hair.

"I missed that," Himiko pulled herself up a bit so that she could lick the bite mark on his shoulder.

He winced slightly as she lapped up some of the excess blood but smiled when she settled back onto his chest, "Me too; I think the last time was all the way back before you had to start going to U.A."

Izu reached down and pulled the comforter across them, staving off the rapidly cooling air around them.

Himiko started to doze off; something nagged at her from the back of her mind, but for the life of her, she couldn't remember what.

She yawned heavily and closed her eyes, 'whatever, it's probably not important.'