Jibun spends a good time with her who has been dating for half a year, but in fact, he secretly had sex with her mother. I wonder if the beginning of things was just before human luck... She visited Jibun while she was away, and her beautiful mother kindly welcomed her... While spending time alone with her, it's kind of itchy, and both Jibun and her mother gradually become men and women... Forbidden copulation without telling her...
