Games like Genrou

If you finished Genrou, the closest matches are Diabolik Lovers: Vandead Carnival, Diabolik Lovers: Haunted Dark Bridal, Diabolik Lovers: Lunatic Parade, Hakuoki: Shinsengumi Kitan and Butterfly's Poison: Blood Chains. All 8 share its visual novel genre and are ranked by how closely their themes and modes overlap.