Can't really like the MC, I generally detest evil character who just does evil things selfishly, and while MC is not completely selfish and repay debt, being something like cannibal is just pushing the limit no matter how the person being eaten is repay. Also just associating with the evil character is just about as bad as being the very same evil character of which the MC has done.
Worldview : 4 star (Nothing is really change from the source)
Character : 4 star ( For being overpower) - 3 Star ( Associating with Evil Character) = 1 Star
Plots : 2 Star ( Nothing really interesting happen with Evil Character)
Overall : 2 Star
"Yu Nanyuan was disgusted by Mo Lan's behavior from the bottom of his heart. Of course, he was not disgusted by Mo Lan saving those passengers, but Mo Lan chose to sacrifice himself for the so-called righteousness."(Ch. 171)
What is wrong with righteousness, what is wrong with wanting to save other people with one sacrifice, it is not like you are force to sacrifice for them but that other is willing to do so out of their own free will. I think that is a beautiful thing, though that might be a wasted life if they are not going to really change anything.