MUDR-400 — I witnessed my masturbation-obsessed, shut-in sister's extreme masturbation, and I was appointed her personal flesh dildo masturbation supporter. - Sarara Uruki

I never imagined my little sister was a pervert who skipped school, stayed home, and masturbated like crazy! I'd been hearing weird noises coming from her room for a while now... But even after getting caught masturbating, she just shrugged it off and started masturbating with my dick!? Hands and toys are good, but the real thing feels amazing! She's enjoying her masturbation life to the fullest with her brother's flesh dildo that she can use anytime!