Kohei is a former competitive swimmer who lives an ordinary life with his wife and high school daughter. One day, his wife suddenly asks him for a divorce. He then has a fateful encounter with a beautiful boy named Yutaka. Yutaka dreams of becoming an animator while working as an online chat boy. At the same time, he is struggling to tell his father that he is gay. They are both confused but eventually become attracted to each other. Then, they have sex. One day they make love, and the next day they hurt each other. Through these emotional ups and downs, their relationship grows deeper and deeper.