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...
This is what I'm going to 
do to you, sweepyhead.
Dann muss ich dich
Schlafmützchen wohl …
Esto es lo que te haré, dormilón.
Pues ahora verás, dormilón.
Ci penso io a svegliarti, dormiglione!
Isso é o que eu vou fazer 
com você, seu dominhoco.
Уж я-то знаю, как разбудить засоню…