Midoriya's P.O.V.

Cinnamon. Toasty cinnamon with a hint of sweetness, maybe caramel. So warm. So strong. So Kacchan. I opened my eyes and was met with the beautiful cloudless sky of the morning, birds chirping nearby, a nice cool breeze. The perfect morning, the perfect moment. Sleeping on my chest was my childhood friend, my rival, my… Kacchan. I didn't want to move, I didn't want to ever leave this moment, but… I should be so completely wrapped up in guilt about this. And I am. Kacchan is not my boyfriend, he's not my alpha. Even more so, I have the most amazing boyfriend in the whole world who isn't here. Who I didn't just lose my virginity to… What have I done? And why do I feel so completely terrible yet don't want to leave this moment for anything in the world? I'm here… with Kacchan. I have no idea how to feel right now.

"Kacchan."

"Mmmm…" Oh I do not want to wake him; I've never seen his face so peaceful in our entire life.

"Kacchan, we really don't want someone to find us like this."

"Mmmm fuck 'em." He pulled me closer to him, nibbling on my shoulder as I felt his member swell inside of me. He was still in rut and oh did it felt good. Drool worthy.

"Kacchan."

"Shhhh." He gripped me tighter, pistoning his hips into mine forcefully. I gasped, wow that felt amazing, incredible. He laid sloppy kisses into my shoulder, neck, and chest as he thrust powerfully into me, littering my body with even more marks. I couldn't help but let out moans, he was hitting all the right places, fulfilling my every last need. It was like finally scratching that itch you didn't know was there, and after you scratched it you didn't know what life was like before you did. I felt my back arch as I called out his name. His strong body against mine, his bulging muscles. It was beautiful, it was bliss. I quickly climaxed, nearly shaking with pleasure as his knot filled me to the brink. Breathing heavily, he collapsed back down on me. Wow. Oh wow. I was speechless.

"You… you knotted me." Twice. He knotted me twice!

"You better be on birth control nerd, for some reason my body really wants to get you pregnant." Pregnant… with Kacchan's child. My chest tightened just thinking about it. I became dizzy.

"Yes… I-I am." I stuttered.

"Good." He relaxed back on top of me.

"Kacchan."

"Stop thinking so much. Just enjoy it." That's really hard because the second I leave this moment the world is going to end. "I said stop." He fluttered his scent gland and the second I smelled the scent I'm very quickly growing very fond of, my whole body just relaxed. I felt like a noodle in his arms, he… calmed me down. "That's better." He mumbled, licking my scent gland on my neck. I smell like him. My whole body smells like him. He flooded my scent gland, claimed me. He marked me. "Nerd."

"I'm sorry Kacchan."

"Ugh." He said moving to get up. His knot pulled hard against me and I let out a scream. It hurt. Wow. Owe. His body really does want to get me pregnant. "I'm stuck." He said, his eyes rolling up to the sky. I closed my eyes. This is really bad.

Suddenly the balcony door opened. Oh no, oh no! "Katsuki? Izuku?" I recognized the voice. It was Kirishima. I couldn't bring myself to look. I just felt so guilty. He and Kacchan, they're a thing, they've spent heats together, and here I am, a dirty harlot, ruining everything they've built together, Kacchan still firmly sheathed inside of me.

"Oi, Shitty hair, close the damn door!"

"Oh my god Katsuki!" I looked as Eijiro was still in shock, closing the door behind him. "Everyone's waking up, looking for the others, you're damn lucky it was me that came out here and not Tenya or Ochaco."

"Yeah, whatever." Kirishima didn't seem all that upset.

"Kirishima, I am so sorry!"

"Why are you apologizing to me? You're the one that slept with this dumpster fire. Are you alright?" He asked kneeling down to me, checking the marks that littered my body to see if I was okay. I was so confused. Kirishima is the nicest person I know, but this is just over the top. Here I am, locked in, with his alpha.

"He's fine. He just needs a.. an… um…" Kacchan motioned to my neck.

"A scent blocker? Oh god Katsuki! He has a boyfriend!"

"I don't wanna hear it, do you have one or not?!" Kirishima fished in his wallet and pulled out one.

"You guys need to pull it together, I'll keep everyone from coming up here, but we have to leave for the train in ten minutes. Hurry up."

Kacchan growled at him as he left, closing the door behind him. "Put this on." He said to me, handing me the blocker.

"Right." I said holding it in my hands but just looking at it. He rolled his eyes and took it from me, putting it on the main scent gland on my neck.

"Now isn't a time for your damn muttering, Deku, pull it together so we can go." He scolded, moving around as far as he could and grabbing clothes. We were still stuck. All I could do was look down. Look at his rippling muscles, his perfect body, his very large appendage still inside of me. He looked down too, letting out a breath, grabbing it firmly.

"Hold still, this will probably hurt." He skewed his face in concentration and pressed himself hard, gritting his teeth at the pain as he squeezed as much of his knot as he could inside of me, then bit his lip hard as he pulled out.

"Gah!" It did hurt. It hurt both of us. Pretty bad actually. You're not supposed to break a knot. Ever. Luckily it seemed like neither one of us were all that injured. Still when I stood, I could barely walk. I wasn't sure if it was because of breaking the knot or because he completely rocked my entire world last night. I blushed just thinking about it.

"Less thinking more putting clothes on nerd!" He threw pants at me and I put them on. Well… he's still Kacchan, even after last night. Last night he was the most gentle I've ever seen him. He cared about my pleasure, he cared about me. Not to mention the sheer filth coming out of his mouth and through his actions, put me in a place where I was just completely overcome with arousal. He was impossible to resist, even though I started it. I started it. What came over me last night? I felt his sperm dribble out and down my thigh as I pulled on the clothing. I wasn't sure whether to blush or be unnerved at the feeling.

"S-sorry Kacchan." I muttered.

"Deku." I jumped as I felt him put my shirt on over my head. "We have to go!" I shook off my thoughts, putting my hands through my sleeves and grabbing Todoroki's jacket. Oh Shoto… What have I done? Kacchan grabbed my shoulder aggressively and glared daggers into my eyes.

"Last night wasn't a mistake. Whatever you're thinking… just stop it alright? We'll talk about it later. Until then… just try to act normal… And don't tell anyone. You don't need that right now." I nodded. I… I think that was Kacchan trying to take care of me… in his own way. Without another word, he hopped over the railing and shimmied down the balcony. I took a breath of fresh air, hoping to pull it together as I went inside the house. The pheromone scent was still very heavy in the air, but it wasn't nearly was effective now. I walked down the stairs and everyone from our class was gathering around, looking tired and significantly hung over.

"Hey Midoriya, how did things turn out for you last night? Okay I hope?" Jiro asked, pulling Kaminari by the hand over to me. He was covered in her bites and hickies. Which wasn't particularly unusual, I guess she's kind of a possessive alpha. My hand went to my own neck, hoping there weren't visible marks there. Kacchan is also a possessive alpha.

"Yeah, I ended up getting some air on the balcony."

"Wasn't Bakugo on the balcony?" Denki asked. As if on cue Kacchan walked in from the pool entrance and went to talk to the Bakusquad.

"Knowing him he probably got drunk and slept on a lawn chair out there. Come on, we should get going." Jiro said, pulling her boyfriend towards the door with the rest of the group. Thank goodness that's what she thought. Lying is not my strong suit. I'm a horrible liar. What am I gonna tell my boyfriend? He probably won't be my boyfriend any longer after this. I had to stop myself from crying as we all walked to the train. I have no idea what I'm going to do. We got on the train and I sat with Ochaco, Tenya, and Ayoma. Tenya looked completely wrecked, muttering about how he wasn't sure if he was married this morning or not. Ayoma didn't say anything but was wearing some alpha's sweatshirt, completely covered in marks and bites wherever you could see, a smug look on his face. Ochaco told me about her night for most of the ride. Apparently she played childhood hand and slap games with Mina all night, getting very drunk in the bathroom. I could only barely listen to her, the whole time I was simply trying not to word vomit everything that happened last night to her. Now wasn't the time and this wasn't the place. That and Kacchan's mark was burning its way into my hip. It didn't hurt, but… it didn't feel right either. I excused myself to go to the bathroom and headed to the one in the next car, getting the first aid kit. The bite was deep, it was still bleeding as I began to treat it. A few minutes later there was a knock on the door.

"Umm… occupied."

"It's me nerd." Kacchan. I opened the door and he barged in, locking us in the very small bathroom together. "Let me see it."

"It's deep." I said showing him the perfect indentations of his teeth on my skin. He made a face.

"Yeah it is. Come here." He pulled me closer, rubbing antibacterial on it. He took care of me, putting the bandages on with skill and patience. He was still rough, he is Kacchan, but… there was a softness that wasn't something I was used to from him.

"Kacchan what are we doing?"

"'m patching you up, what does it look like?" He said not looking up at me.

"No… I mean… what is this? You… marked me." Todoroki's never marked me. We've never even had sex! Yet I threw it all away to have sex with Kacchan. The hormones made me lose my inhibitions, but I made the choice. I wanted to do it.

He shrugged, "what do you want it to be?"

I didn't know. I've wanted Kacchan my entire life. I still want him, and although I'm not really sure what those feelings are, I know that I love Todoroki. "Shoto's going to be devastated."

His face perked up, but I couldn't read his expressions. "He sure is." He pulled me into a hug and then… tried to kiss me. I pulled away, in the small space we had in the bathroom, rejecting his kiss. "What's wrong Deku?"

"Kissing you… it's wrong."

"Kissing me? Now? After what we did last night? It's wrong? You're with me now, what does it matter?"

"With you? Kacchan…"

He looked down, balling his hand into a fist. "You don't want to break up with him…" Was his… was heart breaking? No, not Kacchan. Not over me.

"Kacchan, before last night I had no idea you felt anything for me in that way."

"Oh really? You didn't?"

Maybe there was… some sexual tension between us but I honestly didn't know he felt… that way. "I have to tell him." It wouldn't be fair to Todoroki if I didn't.

"And hope he doesn't dump you." I looked down, rubbing a tear from my eyes. "Well I'm not gonna be your fall back when he does." He said, stand up off the sink and unlocking the door.

"Kacchan."

"If you want… last night didn't happen, whatever." He shrugged off, leaving the train car. I spent the rest of the train ride having a complete break down and then struggling to pull myself together. Did Kacchan really want to be with me? Like… more than just sex? And did I really just blow it forever with him? But Todoroki… he's incredible. The best boyfriend anyone could ask for and my complete lack of inhibition screw up everything for us. He'll never forgive me. How could he? But I have to tell him. I owe him that much.

The rest of the train ride was rough, pulling it together enough to walk back to UA with everyone was even harder. I decided it would be best if I took a shower, really scrubbed Kacchan's scent off of me. There was no use in rubbing it in Todoroki's face. I felt like I scrubbed myself raw, but no matter what I did, the memory of his scent wouldn't fade. I'm not sure if I wanted it too. He marked me. Todoroki has never marked me. We've never even talked about it. But Kacchan just… did it. Knowing what it meant. Maybe he did want to be with me… I really can't think about that now. After my shower I was basically bright red with scrub marks as I put fresh clothes on. It's about 10:00am, there's a chance Todoroki's awake by now, but really, if he doesn't have to be awake, he's not. Sleep is sort of an escape for him. I'm really going to miss our late night deep conversations, getting to know him, loving him… I felt tears come to my eyes as I procrastinated by packing up my stuff to head home for winter break. I'm not sure I'm ready to confront him about last night. But once I finished packing, I knew it was time to face the music.

I took a deep breath and walked upstairs to Todoroki's room. I knocked a few times then opened the door. He left it open for me, just like he said he would. He was still in bed, sleeping peacefully until he heard me come in. With a warm smile he motioned for me to join him on the bed. My stomach was doing back flips as I crawled in next to him. He big spooned me, wrapping his arms around me and burying his face into my scent gland. He scented me without even realizing his previous scent marker was long gone. I just felt guilty. Guilty for letting Kacchan scent me, guilty for letting him mark me. The mark on my hip burned as Todoroki placed his scent on me. It was telling me that I was marked by another, that this was wrong. But everything was wrong, so wrong.

"What time is it?" He asked before licking and biting my ear.

"Almost eleven." I squeaked, my chest was so tight with fear I could barely breathe.

"So much for breakfast." He said squeezing me tighter, nuzzling in my neck. He was being very affectionate today. He must be in a good mood. Days when he's in a good mood are rare, he's always kind to me, always sweet, but affectionate… it's not terribly often, and such a gift when I see it. I felt tears come to my eyes. I'm about to ruin everything. "Lunch?" I nodded, trying not to look at him. He kissed me on the cheek, rolling over me and going to get dressed. I found myself curling into a ball, taking in everything around me. This is probably the last time I'll be in his room, the last time he'll ever show me affection, the last time he'll ever speak to me. I don't want to lose him, I'm not ready, I don't know if my heart can handle it. But I have to tell him, he has to know.

"Izuku."

"Huh? What?"

"I asked you if you wanted to go to the noodle restaurant where we had our first date. I… we need to talk." My eyes widened. Is he gonna break up with me? Does he already know? Someone at the party must have told him, figured it out. Or he smelled Kacchan still on me. We need to talk is never good. It can't be.

"Uh yeah sure." He offered me his hand. I took it, for maybe the last time, and we walked down the street to the noodle place. Our walk was pretty quiet. Todoroki doesn't talk very much unless I offer conversation, and I was terrified that 'I had sex with Kacchan' would just blurt out of my mouth if I opened it, so I remained quiet. We sat at a table, ordered, and then I knew it was time to talk about last night. I had to.

"You said we needed to talk?" I could already feel my eyes watering with the tears I knew were coming.

"Yeah… we do." He pulled an envelope out of his pocket and handed it to me. I opened it and started reading, although it was… in English. My English isn't perfect but… I got what the letter was saying.

"The Justice League wants you to do an internship with them?"

"For four weeks over winter break…"

"In America." He nodded. "That's… that's the most incredible opportunity…. Ever. The Justice League?" My jaw just dropped. I was at a loss for words. I can't believe he has this opportunity. It's just… wow.

"I'm… having a hard time believing it too." He played with my hands above the table.

"What? What's wrong?"

"Do you think I should… do it?" He asked reluctantly. What? He's not serious.

"Of course you should do it. You have to do it! This is a once in a lifetime opportunity! Shoto! I'm so proud of you." Tears coming to my eyes for a whole new reason.

He looked down, scratching his head. "My English isn't that great… four weeks in America. Four weeks without you… I probably only got it because my dad is the number one hero in Japan."

He's nervous. I mean he has a right to be, this is the major leagues here, but that doesn't mean he shouldn't take it. "You got it because you're amazing Todoroki. You always have been. You have to do this. It's such an incredible opportunity."

He nodded, biting his lip. "We wouldn't really be able to talk much… four weeks away from you…" If he's worried about me… there's no reason to be. I'm… I'm not gonna cheat on him again. I won't. I'll be here… missing him… waiting for him. In that moment I realized I couldn't tell him about what happened last night. He can't… do his best with this incredible opportunity with that information weighing on him. Hurting him like that. And if we were to break up, that would be even worse. He needs to be able to focus on this opportunity, do his best! Even if it means keeping this secret from him so he can do that.

"You're going to do amazing. It's going to be just fine. You can call me at three in the morning when you have a break if you have to… I'll be waiting by the phone even if it's for just five minutes. If you're concerned about me, don't be. Don't worry about anything. Just learn everything that you can while you're there!" I said to him with a happy smile, I was so happy for him. Truly.

"It's an incredible opportunity." He said with a small smile and a blush on his face.

"You're gonna be amazing." And so I swallowed my guilt, let it linger in the pit of my stomach. When he comes back, I'll tell him then. But right now, he needs to focus. Be the incredible hero I know he can be. I'll tell him when he gets back. I will.