
I don't remember when I first read this novel, but I really love this novel, to the point of buying the physical version once it was available (and affordable) in my country. I know that the MC will marry the same ML thrice, it's right there in the title! But every time the ML died, I'd still cry. Good thing this is a happy ending, or I might hunt the author myself.
Another one by Cyan Wings! It gives a Mr. & Mrs. Smith vibe, MC is someone who had won against a system and decided to settle down in ML's world. ML is an protector whose mission is to protect their world from outside interference, like the system. Both tried their best to conceal their background to the other, but everything started to fall apart once the system MC once won against start sending people to their world again.
Hilarious story, I never thought I (and the full-time exorcist ML) would feel sorry for the ghosts plight. MC is a staunch believer of Marxism, so he didn't believe in ghost, the thing is, he's fully capable of seeing ghosts, it's just that he interpreted what he saw as someone who needs help, like flipping the ghost under the bed upwards (and expose him to sunlight LoL). Thanks to MC, the ghosts decided to move on (because there's nothing worse than being tormented even after death, and worse, they can't win against MC). This is a short read, so I'd recommend you give this one a read.