I think your tolerance for this story is going to entirely depend on whether or not you can forgive the ML, Zhi Xian, for the way he behaves in the very beginning.  It's... not a good look for him.  He also never apologizes for it and the author tries to do some hand-wavy bullshit justification that because it was done in a joking manner, that the ML didn't really mean it and wasn't actually going to do it, that it was it was okay.
It wasn't.  Just to get it on the record, it absolutely was not okay that Zhi Xian

threatened to rape and kill the MC, Tong Xiaosong, in order to get him to comply with his demands... even if those demands were not harmful to him

.  It's further compounded by the fact that Zhi Xian was wearing the face of one of Tong Xiaosong's tormentors when he did it.  Also, for the record, he will never gain his own appearance.  He is forever going to wear the face of the guy who instigated much of the bullying and torment Tong Xiaosong experienced.
Tong Xiaosong is an incredibly pitiful figure at the start of this story.  He's experiencing horrific bullying from his roommates, is being harassed by the most popular boy in school (who's encouraging the bullying with money as a way to manipulate Tong Xiaosong into a relationship with him), and is under a lot of pressure to succeed and do well in school so he doesn't let down his poor family.  It's to the point where the boy is contemplating murder or suicide.  There's some ethically super dubious counseling done after the graphic deaths of his roommates (I always have questions about the psychology standards of China in any story where counseling or psychology is mentioned but I'm pretty damned sure that it's ethically unsound and definitely grounds to lose your license to encourage someone to think that the deaths of their bullies is a thing to celebrate... it encourages the thought process that killing the thing that's harming you is a good idea) and then Zhi Xian starts actively stepping into his life.
Overall, I mostly enjoyed the first half of this story, but I feel like it should've ended way earlier than it did.  The story hit it's climax about halfway through

with the death of Gu Xuan and Zhi Xian gaining a living identity

and the rest of it had no real plot driving it.  None of the things that happened were something that needed to be conveyed.  They were extras and should've been properly annotated as such. 

And, in my opinion, either Ke Lan's death should've been done earlier in the story or just not have happened.  It didn't really have a point where it occurred.  I'm not sure it would've had a point earlier either but at least it wouldn't have felt so unnecessary.

Anyway, the first half was decent, if you can get over some behavioral barriers, but the latter half was literally just extras being billed as part of the main story.