Contrary to her flashy appearance, the serious and hardworking high school girl, Nekozuka Serina, was dedicated to studying in order to achieve her goal of being the top of her class for a scholarship. However, the top spot was always monopolized by the discipline committee member, Tachibana Reiko, who constantly criticized her outfit, and Serina had yet to achieve her goal of first place. While plotting to get back at the always condescending Reiko, Serina unexpectedly spotted her entering a love hotel with an unfamiliar woman one afternoon after school...