"Big brother, what's this?" My little sister is curious about the soap mat and lotion she found in our parent's room. My virgin brother, who has just awakened to sex, knows that this is a naughty tool, but suggests that we play with it together! "Let's climb on top of you and play slide," he says, half-naked and playing around, when he slips his penis into my little sister's small pussy! The pleasure of the slippery soap play makes the brother and sister lose consciousness! Her pussy is in the middle of development and is so excited that it can't stop convulsing...