美術専門校で優秀な成績を誇る岡本はスランプに陥る。天才が故にリアリティ志向が高じ、納得いく創作が出来ないでいた。ヒビキは彼の為一肌脱ぐことに「女性を経験しなければ、本物は描けない」秘密のレッスンが始まる。性に奥手な岡本と次第にのめり込むヒビキ。口実から始まった関係であったが互いに惹かれ合っていき…。
Okamoto, who excels at art school, falls into a slump. His genius has led to a strong desire for realism, and he is unable to create works that satisfy him. Hibiki goes out of her way to help him, and they begin secret lessons, teaching him that “you can’t draw the real thing unless you experience women.” Hibiki gradually becomes obsessed with the sexually shy Okamoto. Their relationship started as an excuse, but they are drawn to each other…