To be honest, I thought my mother-in-law, Reiko, was prettier and sexier than my wife. So when Reiko decided to take care of me while my wife was away on a trip, I was so excited I couldn't think straight. But maybe because I was in a carefree mood, I accidentally peeked at Reiko changing her clothes. It was my first time seeing Reiko's sexy body...and her confused expression...I couldn't hold back any longer.