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...
Um... Isn't that just your 
fantasy, Prince Manwh*re?
Äh, ist das nicht nur einer deiner
Wunschträume, Schürzenjäger-King?
¿Esto es una fantasía tuya,
Príncipe Degenerado?
¿Esto es una fantasía tuya,
Príncipe Degenerado?
Ce serait pas un de tes fantasmes,
prince playboy ?
Uhm... Non è che è solo un tuo sogno
a occhi aperti, Principe P*ttano?
Hm... Isso não é apenas um 
delírio seu, Príncipe Gal*nha?
А тебе это, случайно,
не приснилось, принц Подстилок?