When his wife was hospitalized and he was forced to live alone, his wife's mother came to Tokyo from her hometown of Kobe to be with him. After a long time of reunion, the mother-in-law and son-in-law began living together in the couple's home! Alone with his mother-in-law, who has a charming big butt. The son-in-law becomes addicted to the lustful and intimate life with his mother-in-law in her forties! While his wife was away, the relationship between the two grew closer! Carnal desires took over...