Yaoshou! the Arch-Enemy Valkyrie Is Actually a Love Brain?

A villain who travels to a world of high martial arts and is destined to be beaten to death by the Valkyrie awakens the "Strategy System" and must fight to the death to gain intimacy in front of his mortal enemy in order to stay alive. I wanted to endure the growth and kill the protagonist, but it turned out that this Valkyrie not only couldn't fight back, but became more and more shy, and even started to attack him in reverse?