Becoming a Fierce Ghost, I Turned into the Shadow Behind the Heroine

Transforming a group of lunatics and mu*derers into beautiful girls, and throwing them into a campus romance manhua to conquer the male lead, what kind of situation is that?
Mission requirements: Conquer the corresponding character, make the other party sincerely fall in love with you, do not harm the character, and do not use coercive methods.
As a member of this group of lunatics and also ranked first, Bai Yu has two privileges:
One, no need to be forcibly transformed into a beautiful girl;
Two, the conquest target is the manhua heroine.
The only problem is, the identity given to him is somewhat special, a fierce ghost, and a female ghost at that.
At the start, he is summoned by the heroine, hiding in her shadow.
“The male lead is a love rival? Ask him if he’s afraid of ghosts.”