The Oshima family lives with their daughter and her husband. His son-in-law, Kazuya, changed jobs and became a janitor, and only he has a different life time. Her mother-in-law, Yuka, supported such Kazuya with her kindness. Kazuya is attracted to her little by little even though he knows she is the mother of her daughter-in-law. At that time, I found out that they were both sexless, and Kazuya could not stand it and pushed Yuka down. Even though I knew he was his son-in-law, his pleasure-hungry body regained moisture and swallowed his cock deep into his vagina.
