
Yes please!! You won't regret it since the tiny details in the novel will make your reading experience much better. The inner monologues, especially, offer so much more insight to the characters. Not that the manhwa doesn't have that but it's still lacking compared to the original material, even more so because the story is full of complex morally-gray characters, so you'll definitely enjoy it

If you want more Wonwoo and 'Nani' bonding moments, I suggest reading from the beginning since the manhwa cut a lot of their interactions. Imo, those moments that seem trivial actually important for the early stages of their relationship. But if you find that it would take a lot of time then you can start from around chapter 20
"Not all espers are perverts" Oh, Gye Yoon you spoke too soon
Tho I gotta say the manhwa doesn't do this part/chapter justice, so I really recommend the novel. The fan translation of the novel is already far ahead anyway, and i can guarantee it will worth your time. They're certified freak4freak so it's satisfying to read