The job of a book store, naturally, is to sell books. In Denki-gai, a gathering place for people who are true to themselves, even erotic literature is valued merchandise! At Umanohone, a store that sells everything from famous works to doujinshi, an "ero book lover" checks through all the erotic books at incredible speed... No, it's actually what they call an "Ero Books G-man"! Love and eros for all! There is no human who doesn't need eros!
I get it... That's why she's called Sensei!
Verstehe ... Deshalb nennt man sie
 also Sensei!
Ya veo... ¡Por eso la llaman Sensei!
Ya veo... ¡Por eso la llamáis Sensei!
C’est pour ça que 
vous la surnommez l’Artiste !
Agora entendi... É por isso 
que vocês a chamam de Sensei!