His mother-in-law, Ryoko Iori, was disguised as the son-in-law of Umanami.

Ryoko married her husband and lived together. It was full of action and number of times. However, Ryoko felt her husband's size was insufficient. One day, a husband and his former wife's child come to take the exam. Ryoko was pleased to see him coming, who was in love like her son. The chime came in and welcomed him. A little grown up he and his wife became a little happy. At night, Ryoko, who is in the bath with him, is amazed. His son with his head out about to spill off the gap of a towel. Ryoko's misunderstanding of her husband's size causes her to delusional fantasies. I went back to my house and left the bathroom, but I couldn't help but worry about his things. In the middle of the night, Ryoko secretly visited his room and turned a futon unnoticed by him, slowly and slowly observing his crotch.