The two came from the same sect and were supposed to be heroic and famous all over the world. However, one of them became a demon and the other died in the battle.
Many years later, he was reincarnated and became an expert in biological anatomy. The first cold corpse he dissected was the rotting remains of someone who died in battle in his previous life.
Intention: Therefore, hatred comes from the obsession with one's own imperfections
