Girl Crush
https://www.mangago.zone/read-manga/i_became_the_youngest_top_idol/
https://www.mangago.zone/read-manga/acting_genius_top_idol/
https://www.mangago.zone/read-manga/in_this_life_the_greatest_star_in_the_universe/
https://www.mangago.zone/read-manga/saving_the_doomed_idols_with_my_touch/
https://www.mangago.zone/read-manga/once_again_idol/
https://www.mangago.zone/read-manga/i_tried_to_debut_my_child_but_ended_up_debuting_myself/
https://www.mangago.zone/read-manga/surviving_as_a_pd_idol_kyuzen_x_karinz/
https://www.mangago.zone/read-manga/lost_in_translation/ (read on Webtoon)
Kpop manhwas like "debut or die" no romance, please