When I Went to Another World, All the Women I Met Fell in Love With Me and Things Got Out of Hand – A Carefree and Heartwarming Harem of a Man Who Fell in Love With a Death God, as He Pours His Thoughts Into a Sketchbook and Dominates All Chapter 37 Discussion

This is a great example of why you don't introduce too many characters all at once. Within the first few chapters of the MC being isekai'd, about 10 different girls have fallen in love with him right off the bat. All of them seem to have a personality archetype that simply consists of them being completely infatuated by the MC. They really don't have any other defining characteristics. As a result, they're all basically indistinguishable from each other, and only exist so that the MC can have lots of different women.