The tragedy eight years ago. Yuki, who turned 18, lost her virginity to her mother's remarried partner, Kentaro. The relationship with her "her father-in-law" that continued from that day ... Yuki could not consult anyone and she had become a sex toy. Spring comes to Yuki's life. Marriage to the man she loves. She was supposed to get a small happiness, but... However, several months later, her husband's father Ryozo finds out about her relationship with Yuki. From this day on, the terrible training of two "fathers-in-law" who are not related by blood begins.
