Escape! I Chased the Aloof Male God Only to Find Out That He Is a Fierce Ghost

A despicable male protagonist with low self-esteem VS a villainous and philandering female protagonist. Horrible sadomasochism, hot-blooded girl battles, and a grand world view. A man who is usually unattainable like a celebrity is seriously injured in a dark alley. You happen to be passing by, should you save him or not?