Chapter Text
Katsuki and Izuku were out playing when Izuku suddenly collapsed. He couldn’t move, he just felt so hot. “Deku? Hey, come on! Get up!” Katsuki shouts when he sees the green haired boy sitting there. Izuku shakes his head, breathing heavily, “I can’t. I don’t know what’s wrong.” He says pathetically as he looks up to Katsuki pleading for his help with only his eyes. “No, you can’t be hurt! I’m going to get yelled at if you’re super hurt!” Katsuki panics as he runs over to Izuku. ...hold on, what’s that smell? Katsuki stops to sniff the air, it smells like...mint? He looks around to try and spot the source, but it’s only him and Izuku in the field. Was the delicious smell really coming from little, defenseless, Deku? Katsuki has to know. He steps closer and Izuku backs up a little, not liking how close he was getting. Katsuki sniffs around before finding Izuku’s scent gland. //So this is where it’s coming from...// He thinks to himself as he allows himself to get lost in the wonderful aroma. “K-Kacchan? What are you doing? You’re really close.” Izuku breaths out. Katsuki can’t help it, he needs more. He wants to bite Izuku’s neck. He opens his mouth and Izuku instinctively pushes him away. “Kacchan, What are you doing? I don’t like that!” Katsuki doesn’t listen, instead, he grabs Izuku’s wrists and holds tight. He’s always been stronger that Izuku, so it was no trouble holding him still. Izuku squirms and yelps, trying to get Katsuki to let go, but it’s no use. “Kacchan...?” He pleads one last time. “Just give up, Deku. Omegas like you belong with Alphas like me, this is what’s right.” Katsuki opens his mouth again and bites down. Izuku flinches and struggles a bit more before giving up. He held still and let Katsuki mark him, which Katsuki liked. He always did like having control over Izuku. After he was done, he stepped back and looked at Izuku, still holding onto his wrists. It really was a pitiful sight, the Omega was dazed and had his head tilted to the side, letting his neck be exposed. Katsuki smiles at the sight before speaking up, “You know, it really is best you be with me. You’re a cute Omega with a nice scent, other Alphas will just rip you to shreds,” Katsuki growls at the thought of another Alpha touching his Omega, touching his Izuku, “I’m the only Alpha that will be nice to you. I’ll make you happy all the time.” He says, hoping Izuku will want to stay by his side after hearing that. Izuku snaps out of it and looks up at Katsuki with horror, “really?! They’re really going to hurt me Kacchan?!” He asks, almost crying. “Yep, and I’m the only one who would never.” Katsuki doesn’t care if it’s a lie, he doesn’t care if another Alpha could take care of him, he just want Izuku to be his. He lets go of Izuku’s wrists and lets the green haired boy hug him tightly, “Please Kacchan, please don’t let them hurt me!” He begs as he shoves his face into Katsuki’s shirt. “I promise they will never hurt you as long as I’m around. I will keep you safe and happy, because you are mine.” He says with a sinister grin.