Bokura No Himitsu.

Even though I'm a boy, I too keep secrets. The private boys' school, Cristal, started allowing female students to enroll this year and the boys, that weren't used to the company of girls, must get used to the new situations and the possibility that romance might happen... Will they be able to keep their secrets? ITALIANO: Una scuola privata esclusivamente maschile cambia registro, diventando mista. Ecco le vicende di quattro ragazzi che cercheranno di adattarsi a questa novità, cercando di nascondere i loro segreti.