To the people who are curious about what happened, the MC's Dad's ship was caught in a storm and was destroyed (as shown in the last chapter). It was carrying a lot of valuable items, which resulted in a large loss for him. So now, in order to regain some financial stability, he's marrying his daughter off to a wealthy/powerful family.
@Eggyeoh @Fofa_1997
I'm guessing the floating corpse was just one of the people who worked on the ship and unfortunately died in the storm