Games like Omega no Shikai: Aki Kaketa Shiki no Ai: Zan

If you finished Omega no Shikai: Aki Kaketa Shiki no Ai: Zan, the closest matches are KinitoPet, Milk Outside a Bag of Milk Outside a Bag of Milk, Milk Inside a Bag of Milk Inside a Bag of Milk, The Sin and Case 00: The Cannibal Boy. All 9 share its visual novel genre and are ranked by how closely their themes and modes overlap.