女将・美紗緒「叔母さん、今夜も牝になるのね…」

Main character returns to his hometown on his father's anniversary and stays at aunt's ryokan. He is fascinated by the beauty of his cousin. One night he sees the girl masturbating, and calling her out impulsively leads to a complex relationship with his cousin and aunt.

[From [url=https://vndbreview.blogspot.com/2020/02/vn-of-month-january-2006-io.html]vndbreview[/url]]