Momo Adachi, a high school teen, is best known for her tan skin and bleached hair. Misjudged by her classmates as a wild party girl, Momo is a modest, lonely girl, who only has dark skin and bleached hair as a result of her long hours of dedication on the swim team. Struggling to fit into her new school, Momo finds herself befriended by a backstabber, pursued by a playboy, and seemingly unable to catch the eye of the guy she's crushed on for years.

After the mysterious murder of the Imperial Envoy in the Magistrate's home - with a bloody sword the only clue - a citywide hunt for all samurai begins. With a high price suddenly on their heads, the band of samurai must escape the city fast.