【Girls Feel So Good】
Sensitive to the teasing of a cool and handsome childhood friend, unable to resist the pleasure of the first time!Every night, a male university student named Yo who indulges in sex with various girls in his apartment. Despite being looked at with cold eyes by his childhood friend and next-door neighbor, the pure and innocent girl Satsuki, he was enjoying his life as a "man". However, mysteriously one day, Yo suddenly becomes a girl. He seeks help from Satsuki, but Satsuki has instead become a handsome man. Moreover, he approaches Yo, saying that he got an erection from seeing him...!? A tumultuous daily life begins, being tossed around by unknown pleasure and love.