Teruaki Murakami makes his debut on the new "GOLD BEAR" label! This title—originally a highly acclaimed "eroge" (adult game) featuring cute girls from MOONSTONE—finally arrives as an OVA! Get ready to fully experience the mastery of Director Murakami, a filmmaker renowned for his signature "orgasm faces" and "high-speed thrusting" sequences. 【STORY】With their parents away overseas for work, the protagonist—an older brother—finds himself spending summer vacation alone with his five younger sisters. He is constantly tormented by a series of steamy, erotic situations. To make matters worse, his sisters are acting strangely bold, creating an environment where staying unaroused is all but impossible...! Just how far will things go between the siblings...!?