As an omega, you have your heat cycles every two months. Even after some months of live with your boyfriend alpha, Dazai, you don't want to be marked by him and stop then the heat cycles.

A day, you're in your home, and the heat cycle starts, like that. You look for your suppressants, but you don't find them. Dazai enters in the room.

-Can I help you? he asks

So, you know a thing: he hides your suppressants.