Authors note:
~A few times in this chapter it says "Instincts" or something like that. I'm an idiot so I have no clue if I'm using it correctly and I can not be bothered to search up if it's correct. In this case I'm meaning it as in something they really can't control. You'll hopefully understand, enjoy!~
POV: Katsuki/Bakugou/Kacchan
I watch Deku run out of the classroom pushing past people as he tries to get to the exit. He leaves and I stand there for a minute just zoning out when I look to the side and see the two extras that always have something to bother me with walking towards me. That's when my feet start moving, I don't know where I'm going but I keep moving. I walk out of the classroom and I smell a faint minty scent, and I follow it past all the extras in the halls and through the school doors. I keep walking unaware of where I'm going as I pause in my steps and sniff the air, "It's so strong-…Deku?" I think to myself as I remember the smell of the nerd's pheromones smelling the exact same. I keep walking though on complete instinct that I can't control, and I make it to the alleyway where Deku brought me to while heading to school. I hadn't even entered the short cut yet and it reeks of his pheromones. I look down quickly. I feel my face heat up but I shake my head knowing it's red and turn the corner when I see a horrific sight.
POV: Izuku/Midoriya/Deku
"An omega huh? I haven't smelt that in a long time.~" I man says as he's got hold of me by the neck. "In heat aren't you? Of course I'm only a beta so I can't do anything for your horney ass, but I can waste my time on you for a little while.~" the man leans in as he's about to kiss my neck and my eyes close knowing I'm not able to do anything. I feel so helpless and pathetic but I can't fight back. Every urge in my being is telling me to, but my body won't let me.
After a few seconds of not feeling anything I slowly open one eye and after seeing the sight in front of me both of my eyes widen. I see the man being held up by the neck by Kacchan! Kacchan punches him in the eye and throws him on the ground, and he then runs off out of the alleyway as Kacchan walks over to me and grabs my face looking into my eyes. "You good fuckin Deku?! What the fuck did he do to you?! He didn't touch you did h—" I cut Kacchan off his sentence by kissing him. I don't know why, I just did it. Not intentionally but it just happened, like I couldn't control myself. I know I may not sound like it but I'm freaking out at the action I've made. Freaking out, also meaning scared for my life! This is Kacchan, my childhood best friend who now hates my guts for being quirkless, and I'm kissing him! What has my life come to…? I continue for around 15 more seconds and then I try pushing myself off of him even though all my instincts are telling me not to. I back away as Kacchan keeps me in his grasp staring into my eyes in shock. Surprisingly he doesn't seem angry, but then again I can't really tell. "K-Kacchan..—" "shut up nerd!" Kacchan yells at me as he looks down and puts his head on my chest as I blush. I then start breathing really hard as I remember that I'm in heat. Kacchan looks up at me in concern and grabs my arm as we start running to my apartment.