My wife has been hospitalized for childbirth. Thanks to having a young wife, I feel sexual desire towards my mother-in-law, whose age is closer to mine than my wife's. My mother-in-law, who completely treats me like a son, shows no trace of vigilance and changes clothes and starts doing housework in front of me. During a massage, when my mother-in-law fell asleep from exhaustion, I couldn't resist playing a prank on her...