The Day My Sister Let Me Use Her Mouth

When 23-year-old Hirose Anna finds out that her little brother masturbates with her dirty underwear, she decides to take things a step further by allowing him to see her do naughty things as well. Each time the situations escalate until she comes out and tells him that as his big sister she will take responsibility for his sexual curiosity. She allows him to do anything with her except for proper sex; yet as his requests get dirtier each time, she remains determined to take responsibility and keep things going no matter what.

Episode List (1)

Fellatio 73% Incest 50% Maids 20% Netorare 20% Voyeur 20% Netorase 20%