A young girl is bewildered by the older woman she admires and the secrets of her body. This is a love story about how the two slowly grow closer.

Miki, whose husband made her grow a penis and whose sexual desires ran wild, One day, Kana, who lives next door, discovers her secret. Kana uses the "secret" she discovered to toy with her. Eventually, their interactions awaken in Miki the "joy as a woman" she had almost forgotten, and new feelings—