FSDSS-999 - I couldn't be satisfied with my boyfriend's penis...I went back to my parents' house and got addicted to my uncle's big dick. Sawa Yamashita

Sawa went to university in the city and returned home for the first time in a while. When she reunites with her relative, an old man whom she adores like an older brother, she consults him about her troubles with her recent boyfriend. The uncle can't control the feeling of being cuckolded and his suppressed desire, so he tries to cuckold Sawa. Sawa, who has come to know true pleasure, gets addicted to the swamp of sex with her father's naughty technique and big dick.