In the dormitory of an all-boys school, Mao ends up sharing a room with Hisashi. They make three promises to each other: "Mao won't disclose that Hisashi is gay and has a boyfriend," "Kotobuki won't see Mao as a romantic interest and won't make a move on him," and "they won't interfere with each other's private activities."
I've never heard Hisashi so 
determined about something.
Ich hab ihn noch nie
so entschlossen erlebt.
Il a jamais été aussi sûr de lui.
Non ho mai sentito Hisashi
così fermo su qualcosa.
O Hisashi está tão certo do que quer...
Не ожидал, что он так загорится…