Tbf, the manhwa cut out a lot of their character growth and bonding moments. Of course, it could just be that the story doesn't mesh well with your preferences.
Right now, I reached chapter 265 of the novel on Lunoxscans, and they've gotten quite close, such as this future arc with Eden and Dobin. The story will also reveal more about Eden's past life before regression little by little (prepare your tissues).
This is around chapter 194, but I highly recommend starting from the beginning because they cut out some nice arcs like them visiting Dobin's aunt's haunted pension house after their 'Reverse' promotions ends with Eden suppressing the ghosts with his fierce vibes.
The only drawback is that the titles of the songs and variety show names aren't always shown in the chapters as well as incorrect pronouns like you or I. I suggest using this link to look up song titles and variety show names using google chrome's webpage translator so that you aren't lost. Look under Reve's Albums and Variety Shows.
https://namu.wiki/w/%EB%A0%88%EB%B8%8C(REVE)

Bro why is everything edens fault and no one supports him like at all, they always make him the bad guy. Like when suggesting plans with the CEO they pulled him aside all upset he made a suggestion without discussing them when literally it was STILL the best decision, when him and Hajun were into it they made it seem like he was wrong for literally just getting beef for them, then he gets a diss track dropped about him and NONE of them believed in him when he was rapping underground before being an idol he always has to apologize or hold back and they NEVER believe in his abilities