I have same problem but the only one found so far is only SSS-class Suicide Hunter
Uh- and i just realized it might bot count as Isekai either sorry :'
Trash of the count's family
Nebula's civilization
How to live as a villain (kinda Isekai?)
Heavenly demon can't live a normal life
https://www.mangago.zone/read-manga/leveling_with_the_gods/
https://www.mangago.zone/read-manga/dungeon_reset/
https://www.mangago.zone/read-manga/transcension_academy/
https://www.mangago.zone/read-manga/the_constellation_that_returned_from_hell/
https://www.mangago.zone/read-manga/the_return_of_the_8th_class_magician/
https://www.mangago.zone/read-manga/worn_and_torn_newbie/ one of his game-characters has a fanclub with lotsa females, but they don't meet mc and overall seldomly appear, his hate-club plays a way bigger role...
https://www.mangago.zone/read-manga/fff_class_trashero/
https://www.mangago.zone/read-manga/kill_the_hero/
https://www.mangago.zone/read-manga/the_live/
Why can't just the MC like choose one person to be with???
Like I know it was for gooners but dang the story was good but the harem theme just ruins it for me what's more irritating is when the only thing I like from the character begins to fade and became the total opposite like???
Yeah so can anyone recommend me some Isekai with good stories good plot and NO HAREM PLEASE!
Thank you very much