I Fell in Love with My Fake Ghost Bride

I'm a poor soul whose parents are pressuring me to get married. With no other choice, I found a spirit-writing medium and made a marriage pact. After that, a series of paranormal events began happening around me. The seal that had been dormant for years slowly started to break, too. P.S. The heroine is an overpowered badass who can crush the heavens, the earth, and the air, versus a cold, aloof, snake-like, crazy hero who can be either dark and twisted or adorably sweet.

Warning: The hero's first love isn't the heroine, and there are angst-inducing moments. But overall, it's very sweet. A slow-burn story about a bickering couple who love to fight. Also known as: That Contract Wife Is Damn Sweet.