A good girl gets pulled into a supernatural war, and the only people she can trust are the devils hunting her. The romance isn't a subplot bolted onto action, it's the reason every supernatural choice matters, because falling for the wrong person could mean the end of everything. By the finale, you're not watching her choose between factions. You're watching her choose between versions of herself, and whoever she picks, someone loses.
Ritsuka lives an ordinary life until her mother vanishes without a trace, leaving her with more questions than answers. When the student council summons her, she learns her family has been caught between two supernatural forces: vampires and devils, each desperate to claim the Grimoire, a book of forbidden power that could reshape the world. Suddenly immersed in a dangerous game she never asked to join, Ritsuka finds herself surrounded by attractive demons and bloodsuckers, each with their own agenda. Some claim they want to protect her. Others have hidden motives. She can't tell who to trust, and every choice brings her closer to uncovering painful family secrets. What begins as confusion transforms into something far darker and more seductive. The line between enemy and ally blurs as Ritsuka navigates supernatural politics, genuine romance, and the constant threat of becoming a pawn in someone else's endgame. Survival means learning who she can actually trust in a world where supernatural beings rarely play fair.