Games like Butterfly's Poison: Blood Chains

If you finished Butterfly's Poison: Blood Chains, the closest matches are The Amazing Shinsengumi: Heroes in Love, The Men of Yoshiwara: Ohgiya, Norn9: Act Tune, Diabolik Lovers: Vandead Carnival and Diabolik Lovers: Dark Fate. All 9 share its adventure genre and are ranked by how closely their themes and modes overlap.