Yuya and Sumire live happily in Tokyo. As a resident there, Mitsu, a professional student who is Sumire's younger sister. Mitsu is a beautiful girl with a gap, and is regarded as a pseudo-lover relationship by being noticed by a certain person. A man named Hinata, who plays the role of Mitsuha's boyfriend, is a member of a hangure organization, and together with the members of the organization, not only Mitsu but also violets are poisoned, and eventually Yuya repeats a gruesome cuckold sexual intercourse in front of him. Soon after the sister's belly was exhausted for nine months ... [* The image and sound may be distorted, but please note that this is not a defect of the product itself.]
