Erika lives with her son-in-law Yoshio in a house where her husband is away from home. The two of them live a peaceful life, but they secretly think of Yoshio as a man. However, Yoshiomo longed for Erika's body and fantasized about being tempted by her friends and went crazy with perverted jealousy. And their thoughts overlap... "It's a secret from my husband," said Erika with a smile.