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Ryuu's a strong and feisty girl who is a bit overprotective when it comes to her best friend Kikuyo. Kikuyo is small & cute which attracts a lot of guys but she has trouble dealing with the opposite sex so Ryuu is there to help Kikuyo turn down boy's confessions. One day however, a third year from the baseball club, Sasaki-senpai, confesses to Kikuyo and she doesn't turn him down... Ryuu starts to realize just how much she likes Kikuyo. And where does Kikuyo's twin brother Kikuzo fit into all of this?