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...
The fragrant panties and my sister's juices 
create the ultimate harmony, and the—
Los pantis y los fluidos
de mi hermana son armónicos y…
Las braguitas y los fluidos
de mi hermana crean una armonía que…
Sa culotte odorante et ses fluides
s’harmonisent parfaitement, tels…
La loro consistenza si sposa alla perfezione
con i suoi dolci succhi, e poi—
Esse aroma, junto com os fluídos da minha
 irmã criam uma harmonia perfeita, que—
Душистый букет её белья, приправленный
телесными водами, рождает несравненную…