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It's been 7 years since I got married ... Keiichiro hasn't had any children and is living a life of passing by his wife, Maria, because of the busy work. One day, Maria suddenly runs away from home. Keiichiro visits her mother-in-law, Ririko, thinking about Maria's body. However, Keiichiro blames himself for not knowing Maria's whereabouts even when asked by Ririko, "Why couldn't I get more involved?" Seeing such a son-in-law, Ririko can no longer look away from the fact that her daughter is afflicting Keiichiro.