Games like Natsuzora no Monologue Portable

If you finished Natsuzora no Monologue Portable, the closest matches are Amnesia, Diabolik Lovers: Vandead Carnival, Diabolik Lovers: Haunted Dark Bridal, Koi wa Rule ni Shibararenai! and Bunmei Kaika: Aoiza Ibunroku. All 6 share its visual novel genre and are ranked by how closely their themes and modes overlap.