Games like Marginal #4 Road to Galaxy

If you finished Marginal #4 Road to Galaxy, the closest matches are Jack Jeanne, Norn9: Act Tune, Uta no Prince-sama: Sweet Serenade, Diabolik Lovers: Vandead Carnival and Diabolik Lovers: Dark Fate. All 7 share its music genre and are ranked by how closely their themes and modes overlap.