I knew wang yi was a system like S0 from the start holy shit.... it explains a lot because in the fragment memories of qin xian (the legendary villain) it shows that wang yi is a system just like S0
and maybe the story went like, system y (wang yi) did something bad and get resetted, leaving villain qin xian and drove himself mad and split himself to fragments, and now system y became a normal human but with 99.9% villain genes (like at the start) it's because he was a Villain guiding system so naturally the higher up deem him as a Villain candidate. and now he had to be on the opposing side with protagonist qin xian
and to think about it, protagonist qin xian has a lot more villain quality despite being the protagonist from the very start
I've been rereading this manhwa more than 10 times just to notice every little detail (that's how crazy i am dawg)