In order to cheer Haruto up after his anime was such a flop, Itsuki gets him as well as Nayuta, Miyako and Chihiro together so they can play a TRPG. Itsuki usually plays girls in games, but for some reason, Chihiro makes out their character to be Itsuki’s character’s little sister, which leads to Nayuta and Miyako also making their characters sisters of the other two. Haruto becomes the GM and does whatever he wants.
Don't worry. We just have 
to have a little kiss.
Ist doch nichts weiter dabei,
ist nur ein kleines Schmatzerchen.
No te preocupes. Basta con un beso.
No te preocupes. Basta con un beso.
Mais non,
il suffit qu’on s’embrasse un peu !
Non preoccuparti! Basterà darci un bacetto!
Não se preocupe.
Só precisamos trocar um beijo.
Не переживай,
нужен-то всего маленький поцелуйчик.