Games like Days of Memories: Kare to Watashi no Atsui Natsu

If you finished Days of Memories: Kare to Watashi no Atsui Natsu, the closest matches are Diabolik Lovers: Vandead Carnival, Diabolik Lovers More, Blood, Diabolik Lovers: Haunted Dark Bridal, Storm Lover 2nd and Sotsugyou M: Male Graduation - Seitokai Naga no Kareinaru Inbou. All 6 share its visual novel genre and are ranked by how closely their themes and modes overlap.