「処女なのにオモチャでオナニーしてると、不感症になっちゃうぞ。」兄がついた嘘がきっかけで無知な妹が大暴走！イケなくなったらまずいとお兄ちゃんのチ○ポで処女喪失！気持ち良さを知ってしまった妹はお兄ちゃんが「イッちゃう！」と言っても「もう中に射精してるって！」と言っても夢中で気付かず杭打ちピストンしまくり！中出しを完全スルーして溢れ出る精子を気にもせず更に腰の動きを加速させる！

"If you masturbate with toys while you're a virgin, you'll become frigid." This lie from her brother triggers a wild rampage from his naive sister! Fearing she'll lose her virginity, she takes her virginity on her brother's dick! Having discovered the pleasure, the sister is so engrossed that she doesn't notice when her brother says, "I'm going to cum!" or "I've already ejaculated inside you!", and continues to thrust away! Completely ignoring the cum that's spilling out, she accelerates her hip movements even more!