Index:

1~6. Living with Elder Sister
Noboru has lives in orphanage since he was small. One day, he has been called to me unknown person that claim to be his family. From now on, he will lives with her elder sister Miss Mizuki and her two daughter.

7~9. Elder Sister Observation Diary
Masato has habit lurking her big sister until one day he get know that his sister like to masturbates. She like to masturbates using dildo. Day by day, she keep buying bigger and bigger dildo to play. Masato when can't handle anymore, he come to his sister room when she was asleep. Then he…

TAGS
MALE schoolboy uniform, sole male, virginity
FEMALE anal, big areolae, blowjob, defloration, facesitting, femdom, hairy, harem, layer cake, masturbation, milf, nakadashi, niece, oyakodon, schoolgirl uniform, sex toys, shimaidon, sister, sleeping, twins, x-ray
MIXED ffm threesome, group, incest, oyakodon
OTHER story arc, tankoubon