If you really really want to read the novel, i highly recommend you to start from the very beginning then you'll understand how different these two are. Even in korean readers community, they seperate this manhwa and the novel as in two different works for their mental wellbeing lol because they used to complain a lot more but in the end this adaptation just keep going in its own way... i personally like the novel more but idk about you, this adaptation seems so rushed in a less fun and more depressing kind of way once you read the novel you'll get it.

I scrolled until ch200+ novel and i still haven't found it the exact ch89 manhwa