Hentai is based on the eponymous manga "Girls Lacrosse Club" authored DISTANCE.  The main character of hentai is an ordinary Japanese boy Kuroda, who got a job in a private women's Academy "Felinus Academy for Girls" as a physical education teacher and Lacrosse coach. However, in the first day he was in an awkward position when he wanted to win the respect of the girls and went into their locker room without knocking. Girls of course ...