Diabolik Lovers is a visual novel series developed by the Japanese game developer, Idea Factory. The series follows the story of Sakuno Hihi, a high school girl who finds herself trapped in a mansion with a group of vampires. The game is known for its dark fantasy setting, engaging characters, and romantic storyline.

Diabolik Lovers: Grand Edition is a compilation of the first two games in the dark otome visual novel series— Diabolik Lovers: Haunted Dark Bridal and Diabolik Lovers: More, Blood —originally released for PlayStation Portable and PlayStation Vita. Published by Idea Factory and developed by Rejet, the Switch port includes enhanced HD graphics, additional scenarios, and combines all routes for the six Sakamaki brothers and six Mukami brothers. The series is known for gothic horror romance, aggressive male love interests, and a controversial "sadistic vampire" theme.

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