Compared to her older sister who is popular with everyone, Nae is a high school girl who looks and feels ordinary. Shortly after entering school, she met a super handsome senior who she fell in love with, and she had a feeling that it was her first love...? 才色兼備な姉に比べて、見た目も中身も普通な自分に複雑な気持ちを抱く苗。 高校に入学し、1人でなんでもできるようになりたいと意気込む苗は、 落とし物を拾ってもらったことをきっかけに、3年生の時雨先輩と知り合いに。 意地悪だけど優しい時雨先輩が気になり出す苗だけど、先輩は苗の姉・芹を知っているようで…？