Cause and Effect Destruction

I want to see a heroine with no censorship and real decisiveness in killing. At the same time, it also needs to be a cool story with a group portrait like the one in the Lord of Friends, preferably in an oriental fantasy style, and with elements of horror and suspense. I also need to bring in the characters that I have seen that have distorted perspectives but still have the aura of the protagonist, slap them in the face, and add characters that impressed me deeply from various classic literary and artistic works that I have seen, so that they can have fun with the protagonist. But unfortunately I can't find this kind of book. So I wrote it, for myself to read and for those who are destined to read it.