Momo Adachi is a former member of the high school swim team. She tans easily and her hair is bleached out; unfortunately, she is stereotyped by her ignorant classmates and is forced to endure rumors about being an "easy girl" who has had many sexual relationships. Her only friend is Sae, who is actually responsible for spreading the nasty gossip due to her jealousy of Momo. Momo is in love with Toji, a taciturn baseball player, but the scheming Sae also has her sights set on the boy. Momo's life is further complicated with the introduction of Kairi Okayasu, a wise-cracking playboy who is determined to make her his. He reveals to Momo that she had saved him from drowning the summer before high school started.