Games like The Sin

If you finished The Sin, the closest matches are Milk Outside a Bag of Milk Outside a Bag of Milk, Milk Inside a Bag of Milk Inside a Bag of Milk, Theresia, KonoSuba: God's Blessing on this Wonderful World! Judgment on this Greedy Game! and Zakuro no Aji. All 7 share its adventure genre and are ranked by how closely their themes and modes overlap.