Games like Hoshi no nai Sora no Shita de

If you finished Hoshi no nai Sora no Shita de, the closest matches are Shinjuku Soumei, Aeryth, Tsuki ni Yorisou Otome no Sahou, Garin Game: Curse of Revival Ceremony and My Merry May. All 6 share its adventure genre and are ranked by how closely their themes and modes overlap.