OMG I'm so sorry! I have not been on NU for a really long time and didn't reply to you! >.< Rebirth of the Thief is one of my all-time favourites and I reread it all the time, especially snippets of my favourite parts in the novel. What I like about the novel is that Nie Yan isn't actually very OP, but only because he was rebirthed and retained his experiences. Throughout the novel, you would see how Nie Yan works hard to live up to his OP title instead of being just confident in his 'MC OP aura'. I like the novel because it gives me the feeling that Nie Yan is actually someone very human and relatable, unlike other OP MC books where the mc feels like a otherworld person and makes decisions and are in situations that no one would ever be in logically.

I'm not very good at convincing people and personally, I also hesitated on picking up the book due to its questionable synopsis originally, but I swear you won't regret picking this up :D