My husband doesn't know - my lewd desires and secrets

Mayu, a wife, meets her husband's friend, Kayama, by chance. As a friendly and hobbyist, he has a wide range of stories, and she also opens up to her. However, one day, Kayama is pushed to him, and he is unable to refuse and ends up having a physical relationship. He feels guilty about his mistake, being swayed by his lonely expression... Her body, which has been out of touch with her husband for a long time, secretly wants to be raped by Kayama deep inside her heart. And when my husband asked me to, I had no choice but to visit his house...