They were adopted by the same killer organization since they were young.
It stands to reason that they should develop into a killer couple who are childhood sweethearts and childhood sweethearts.
Unexpectedly, they turned into a pair of hypocritical enemies.
Killing people with her body was her hobby, and he couldn't control it.
He watched her seducing other men like this, hey, he didn't care.
However, things are impermanent.
What if she falls in love with the man she seduces?
What if he kills that man again, eh...