When he heard that his father-in-law was going to be hospitalized, Shinya decided to live with his mother-in-law, Rie. He didn't want Rie to feel lonely being alone. Although his actions were out of pure intentions as a son-in-law, his wife saw through his true feelings. Shinya was becoming aware of Rie as a woman. When his wife realized this, the relationship between Shinya and his wife rapidly deteriorated, and eventually, his wife left the house. The father-in-law was hospitalized, and the daughter-in-law ran away. There were no longer any barriers preventing Shinya and Rie from entering into a forbidden relationship.
