Omegas purr when they’re happy and content and Katsuki starts purring during a class sleepover and everyone collectively turns to stare at him because they’ve never heard it before. The silence is broken by Mineta telling him to stop being so loud and they all beat him to death.
omega izuku actually being a danger to society because he’s got a rare scent that is biologically destabilizing for alphas would actually be so funny. his scent spikes territorial instincts and sends them into immediate rut if he isn’t suppressing it uh huh uh huh
wholesome #bkdk with Izuku trying to rile things up between him and Kacchan despite being injured because he wants to de-stress Katsuki, and Katsuki who rolls him up in a blanket burrito and attacks him with a bunch of kisses until he's all worn out, dazed, and sleepy.