A high school girl named Hina brings a young boy named Riku along with her to a place that's been marked off-limits. Riku feels uneasy about this, but then Hina forces her hand into his crotch and starts groping him. His knees go weak the moment he ejaculates and he falls down. Without caring about it, Hina begins to pull down her own underwear... Haguruma-sensei writes a hot story about a high school girl who stains her hands with forbidden play! (Source: FANZA, translated) Note: Published in COMIC Anthurium 2021-02.