Games like Little Busters! Converted Edition

If you finished Little Busters! Converted Edition, the closest matches are Steins;Gate: Linear Bounded Phenogram, Sweet Fuse: At Your Side, Clannad, Ephemeral: Fantasy on Dark and Ima Sugu Onii-chan ni Imouto da tte Iitai!. All 7 share its adventure genre and are ranked by how closely their themes and modes overlap.