Keiko, my wife, decided to go on a trip. During that time, my mother-in-law, Ryou, will come to keep an eye on me to prevent any infidelity, and Tatsuya, inwardly, was delighted. Tatsuya, who had been attracted to the beautiful Ryou for some time, was overcome with desire and peeked at Ryou while she was bathing. The glimpse of Ryou's alluring body made it increasingly difficult for Tatsuya to contain his excitement. Late at night, when Ryou had fallen asleep, Tatsuya sneaked into the bedroom...