Otou-sama ni Naisho de Genkai made Hirogechaimashita ~ Koukakurou Sankai

Mutsumi is a quiet girl. One day, she finds an adult video that her father, whom she doesn't talk much with, owns. What she saw on the video was a girl whose anus is being expanded with pleasure. Since then, she started to be interested in anal expansion... [edited from [url=http://www.dlsite.com/ecchi-eng/work/=/product_id/RE050924.html]DLsite English[/url]]