Hello!
I just did some quick research and the series is called 파쿠리인 내가 어시를?! or My copy cat, as far as I know there is no English translation but these is one in Korean, Japanese and French (Links to these ones: https://www.mangaupdates.com/series.html?id=156707)
It's about an artist who doesn't have his own style so he copies the styles of his idol and then he ends up working for him (I believe at least).
I stopped reading that because the mc pissed me off so bad. He literally copies other people’s work *ahem ahem plagiarism* and feels no guilt for it. He also buys products that his social media idol has to copy him I.e. being his copycat. And he copies his artwork. Don’t read it, seriously. I mean you can, but it’ll probably make you so annoyed.
Someone now the bl's name on the final of this page?
http://www.mangago.zone/read-manga/my_darling_signed_in/uu/iur_chapter-83/pg-5/