Amagami SS+ Plus, Amnesia Recommendations
Both have the same, harem and romance genre.
Both have the same situation where the members of the harem have its own episode with the MC.
One is more of a reverse harem, while the other was a typical harem.
One has an extra mystery and shounen genre, while the other one has school and shoujo genre.
Same situation where the members of the MC's harem has its own episode arc, except one is more of a reverse harem.