One day after they both attended a mixer and a drunken Tachibana bemoans that he'd rather be a pretty girl, they are both visited by the Goddess of Love who grants Tachibana's wish before whisking them into a parallel world.
Office workers Hinata Tachibana and Jinguji Tsukasa cannot be as different as night and day: having been best friends for 32 years, Tachibana resents Jinguji for being popular with the ladies and wants to get him married off so he would stop stealing his thunder.