The dazzling, incredibly adorable shy smile of brand-new teenage gravure idol "Mana Ishibashi" shines in her debut work! The shocking first appearance of an illicit love story between a brother and sister finally arrives! Standing at just 144cm with a petite, childlike figure, Mana boldly reveals herself in her first thong and ultra-small bikini! Her innocent expressions and palpable tension during the shoot make her embarrassment utterly captivating! This passionate, full-effort debut features the intense portrayal of a pure young girl’s awakening.