The Unbeatable Bodyguard from the Mountains

Ascension past the mortal boundary requires that a cultivator have no debts left in the world below. Miles has the power and cannot finish the climb, because his ties are unsettled, so his master sends him down the mountain to cut them, starting with an arranged marriage his family owes. The bride is Camila, heiress to her family's group and the person who refuses the match her father made. She treats Miles as a nuisance her family has attached to her. Then the trouble starts arriving: harassment, corporate maneuvering inside the company, rival heirs, hired men, and people after an old formula her family holds. Miles handles each one as it comes, mostly out of her sight. There are livestream sales showdowns and there are fights. What she has is a bodyguard she looks down on and no other defense, and over time she stops resisting him. They work through the betrayals and the people trying to kill her, and through the contract that put them together.