Title : Sister’s Health Education
Original Title : J〇妹との性教育
Language : English, Japanese, Chinese (Official)
Developer : Cream Time
Released date : 2026-06-09


DESCRIPTION
“Hey, big brother… what does masturbation feel like?”

One day, my slightly introverted younger sister suddenly caught me off guard with that question.

Usually quiet and not one to socialize, she stared intently into my eyes, her gaze harboring an uncontrollable sense of “curiosity.”

A casual question taken lightly at first. Yet, that very conversation would drastically alter the distance between us.

Time spent together in the quiet room. Our eyes meet, words fade away, and before long, the atmosphere between us gradually transforms into something sweet, yet dangerous…