Originally serialized as a celebrated digital comic before expanding its global readership through English webcomic platforms, Nevermore has quickly established itself as a standout title within the modern action-romance genre, drawing comparisons to top-tier school battle manhwa. The story is set against the elite backdrop of Ozoh Academy, an exclusive institution catering exclusively to the gifted and mega-rich, where hidden agendas lurk behind every corner. The narrative centers on James Jung, the academy's undisputed top student who is secretly operating as an undercover agent assigned to protect the principal from an elite and elusive killer known only by the codename Black Mamba.

The dynamic shifts dramatically when this dangerous assassin infiltrates the school under the alias of Samuel Gyo, becoming James's new homeroom teacher. To maintain their cover, the two rivals must strictly adhere to three bizarre rules: keep their true identities hidden from the student body, ensure no students are harmed during their confrontations, and strictly refrain from using firearms or explosives, though poison and tranquilizers remain fair game. As they engage in a high-stakes cat-and-mouse game filled with sharp comedy and intense drama, neither operative was prepared for the ultimate hazard outlined in an unwritten fourth rule: falling in love. This lethal blend of espionage, academic pressure, and slow-burn romance drives the gripping progression of the series, forcing both characters to question their allegiances as emotional tension threatens to compromise their mission.