MIDA-786 — The day I witnessed my older brother frantically rubbing his penis with a porn magazine in his hand, my sexual awakening began, and we made the mistake of having passionate sex, drenched in sweat, and I ejaculating inside him repeatedly that summer. - Izumi Momoka

I saw it... my older brother frantically rubbing his penis with a dirty book in his hand. I can't forget the sight of his huge, swollen penis that I saw then. Ever since that day my younger sister, who had just discovered her sexuality, asked me if she could have sex with her older brother, we've been having sex in all sorts of places around the house, whenever our parents are out. She still doesn't know enough about sex, so we don't use condoms, and I end up ejaculating inside her... I was so eager to grow up, and that summer day we had sex like crazy, drenched in sweat.