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."
We shall respect each other's 
privacy while jerking off.
Wir stören uns gegenseitig
nicht beim Runterholen.
No interrumpiremos al otro
cuando se masturbe.
No interrumpiremos al otro
cuando se masturbe.
On se laissera de l’intimité
pour se masturber.
Rispetteremo la reciproca privacy
mentre ci masturbiamo.
Não atrapalhar na auto-consolação
do outro.
Мы не будем мешать друг другу
ублажать себя.