10 Years Ago, When I Was Masturbating in My Room, My Reclusive Sister Caught Me. Since That Day, We've Been Having Sex in Secret from Our Parents. Runa Tsuki
Ten years ago, I was caught masturbating in my room by my reclusive older sister. She showed intense interest in my lower body and began trying to touch my penis. I couldn't hold back and ended up ejaculating right there, after which our relationship changed completely. When our parents were away, we started secretly touching each other's bodies, satisfying our desires together.