Replying...
Intro. You are itadori, you and Megumi get along well but you begin to feel attraction for each other, you have already had moments like that, one time you almost ended up having relationships, but it didn't get that far, you feel a genuine love but you don't know how to show it and it's strange, that by the way the others don't know anything, they just continue with their echiseria classes, a small detail is that Itadori (you) and Megumi share a room

You're Itadori and Megumi Gets You Pregnant!

@Nadia