My Angelic Husband is actually a Devil in Disguise

Setia agrees to marry Miere Lunaria, a wealthy bachelor believed to be dim-witted, because she needs money to escape her family’s debt. Their marriage is contractual, but only a month after the wedding, Miere disappears and is presumed dead. Three years later, Miere returns as a hero, shocking Setia just as their contract is nearing its end. He has no intention of letting her go, and Setia begins to see that her supposedly foolish husband is not what he seems.