My husband brought my brother-in-law, Yuji, home for the first time in a long time. His wife, Aya, is happy to see him again, but... Aya, who is weak and easily influenced by other people's opinions, is attracted to Yuji, who knows about the troubles of infertility. , alluringly and fearfully opened his legs. Aya's sexual desire gradually rose from within her body as he skillfully made her body melt with his persistent and precise caresses. The still developing body is unaware of the exciting affair with her brother-in-law.