Responses
https://www.mangago.zone/read-manga/i_became_the_youngest_top_idol/
https://www.mangago.zone/read-manga/debut_or_die/
https://www.mangago.zone/read-manga/the_genius_idol_s_strategy_to_stardom/
So far those are the 5 idol isekai that I read. There might be others but either I haven't read them, or I lose interest in them.
I had to read again from the beginning because I legit forgot which one is this one again, all because my dumba** is reading multiple isekai idol manhwa all at the same time.