Hearing that his father-in-law would be hospitalized, Shinya decided to move in with his mother-in-law, Rie. He didn't want Rie to feel lonely and alone. As a son-in-law, he acted purely out of pure feelings, but... his wife knew what Shinya really thought. Shinya thought of Rie as a woman. Once his wife realized this, the relationship between Shinya and his wife rapidly deteriorated, and she eventually ran away from home. His father-in-law was hospitalized, and his wife ran away. There were no more barriers between Rie and Shinya and their forbidden relationship.