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."
Because he's going to think 
I broke my promise.
Er wird noch denken,
ich hätte unseren Schwur gebrochen …
il va croire
que je n’ai pas tenu ma promesse.
Oso perché altrimenti penserà
che ho infranto la nostra promessa, no?
Pode ser que ele pense que
quebrei minha promessa...