Our secret

So this is an AU where Bakugo and Toga are twins and where Toga goes to Yuei. Her name's Himiko Bakugo here, and she's able to control her bloodlust. Also, Himiko and Katsuki are childhood friends with Deku and Ochako.

So for the summary!
It's been two months since Deku and Ochako started dating, but they have a secret.
One evening, when Tsuyu and Mina decide to invite Ochako for a sleepover in Momo's room, the secret is discovered. But what's their secret?

Ps: English is not my native language (I'm from baguette land) but my useless brain decided it wanted to write in English so here I am!
Thanks to my friend @Licorne-Chieuse for the story cover !