Well. That was... something.  I liked the side characters and a lot of the MC's interactions with the other four in the five champions were gold.  Some of the fights were incredibly dramatic and high stakes but it made the finale battle very... meh.  I was on chapter 119 and I realized this was NOT going ro be great when you only have 3 chapters left and you've barely started your big finale confrontation.  
Also the story tried to portray that the MC failed to influence the protagonist onto the good path but honestly... he barely did anything.

in the end the author decided to go with a whole "it was never going to work" type thing by making the protagonist have a whole insanity button that was super easy to press but honestly I just felt bad for the kid. He was literally isolated, abandoned, dragged into situations way over his head, abandoned again, nearly died, possessed, nearly murdered by the ML, obtained a master who very publicly declared love for the ML (immediately following the murder attempt), and then said new master fucked off into seclusion for 10 years and when he recovered, peaced out to find murder ML without even checking in on the disciple. Like... that was some seriously minimum effort reformation. You can have a sad face sticker.

The romance was incredibly slow burn and tbh I'm still not sure I was feeling it.  Most I'm still squinting at Chu Junyu feeling it. Maybe it's because we spend so much time in Pei Jing's head and so little in Chu Junyu's that the paltry few signs of actual romantic interest from him feel... weak? Also he spent so much time off page, just living in Pei Jing's head, that it didn't feel earned. I would've preferred another extra chapter or two that just focused on the two of them together so I could see them together instead of stolen kisses in fraught circumstances and Pei Jing fantasizing about his relationship.