She divorced her husband and raised her son on her own. I graduated from university and got a job in Tokyo. I encouraged my son to live alone, but he didn't leave the house and slept all day, even on holidays. Leila invites her on a hot spring trip to take her out. I love my mother... She is confused by her son's sudden confession, but she wants to do something about her beloved son... A mother accepts her forbidden love with the promise of just one day. She climaxes at the sight of her son who has grown strong. Two people who can't stop...A story of forbidden incest.