"Don't look at me like that! I'm not a woman!" says Nanao, a tomboy who hates her femininity. However, against her will, her basketball club mates and teachers are aroused by Nanao's unconcealable sexiness. They give her sleeping pills to play with her erotic body, make her big breasts wet and transparent with a water gun, and make her cum during a massage to make her aware of her female side... And as her pussy gets wet with female pleasure, they teach her the joys of being a woman!