Ever since witnessing her brother frantically masturbating with a porn magazine in one hand, and her sexually awakened sister engaging in a sweaty, frenzied ejaculation, that summer's mistake... Izumi Hyakuka MIDA-786

I saw it… my brother was holding a porn magazine and frantically masturbating. That swollen, huge penis I saw then is something I'll never forget—ever since the day my sister, awakening to sexual desire, asked to have sex with her brother—we'd been making love wildly in every corner of the house when our parents weren't home. Because we lacked knowledge about sex, we didn't use condoms and just ejaculated inside… that summer when my sister and I were sweating profusely and wildly having sex, all to grow up faster.