Itsuki Hashima is a popular, young novelist. However, he is obsessed with little sisters and his works seem to always include little sisters, so there’s some difficulty coming up with a new series. One day, his younger step-brother Chihiro and his colleagues, Hayato Fuwa, Nayuta Kani, and fellow college student, Miyako Shirakawa show up at his apartment. They enjoy dinner, drinks, and a game. That night, Nayuta makes advances towards Itsuki, but...
Now, go ahead and break through my 
nasty little closed-off spot, too.
Weiter so, durchbrich als Nächstes meine
unanständigen, verschlossenen Körperöffnungen!
Ahora puedes solucionar el problema
que tengo entre las piernas.
Ahora puedes solucionar el problema
que tengo entre las piernas.
Tu peux défoncer les limites
de mes endroits inavouables aussi !
E ora, non aspettare oltre e infrangi
anche il mio piccolo posticino chiuso!
Agora aproveite para quebrar meu 
buraquinho fechado e indecente também.
А теперь, прошу, отбрось сомнения
и разорви мой девичий предел!