Such an edge-fest. These web novel stories always rush into everything; never proper buildup, never any sort of proper development. Just, this happens now. Oh, oops, I don't feel any emotion for murdering a bunch of people, whatever, let's do this revenge thing.
Imagine having this story developing up to the betrayal 5-10 chapters, and you don't see it coming at all when suddenly the plot completely twists ... but, nope. No patience for anything, the protagonists always completely static (two chapters from random villager to badass revenge murderer), the bad guys just random "mwhahaha" evil dudes ...