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...
You seem like a very 
reliable younger brother.
Du bist wirklich ein
vorbildlicher kleiner Bruder.
Pareces un hermano responsable.
Eres un hermano la mar de responsable.
Tu es vraiment
le petit frère parfait.
Sei proprio un fratello minore modello.
Você me parece um irmão 
mais novo bastante confiável.
Ему очень повезло,
что есть такой заботливый брат.