Games like Aiyoku no Eustia

If you finished Aiyoku no Eustia, the closest matches are The Fruit of Grisaia, Aokana: Four Rhythms Across the Blue, Honkai Impact 3rd, You and Me and Her: A Love Story and Diabolik Lovers Chaos Lineage. All 8 share its adventure genre and are ranked by how closely their themes and modes overlap.