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...
Wake-key-key, wake-key-key.
Raus aus den Federn,
raus aus den Federn!
Despierta, despierta.
Despierta, despierta.
Debout ! Debout !
Sveglia-glia! Sveglia-glia!
A-co-corda, a-co-corda.
Проснись и пой, проснись и пой!