Aoi Isuzu is a 16-year-old girl who just wants a peaceful life. But as the beautiful, rebellious, and top-ranked student known as "Bloody Twilight," she's the most feared person at her high school. She uses her cold-hearted reputation to scare off annoying classmates and unwanted confessions. Her only 'friends' are her goofy childhood companion, Toujo, and his sweet sister, Rika.

Aoi's peace is constantly threatened by bullies (whom she despises) and her academic rival, the school's 'perfect prince' Fuji Kenji, who isn't intimidated by her at all. Her chaotic life is set to explode when a superstar gamer, Daiki, and a famous actor, Hiroto, also enter the picture. All three guys end up falling for the "Bloody Twilight," leading to a hilarious (and not-so-peaceful) fight for her heart, even though she's only got eyes for one.