Games like Lucky Star: Ryouou Gakuen Outousai

If you finished Lucky Star: Ryouou Gakuen Outousai, the closest matches are Borderlands 3, Pikuniku, Gibbous: A Cthulhu Adventure, Everlasting Summer and The Eden of Grisaia. All 7 share its adventure genre and are ranked by how closely their themes and modes overlap.