Lord, Starting with a Pawnshop

After transmigrating, he becomes the lord of an island in another world, but his domineering stepmother keeps him under her thumb, and his life is in constant danger. How can he accept that? Wasn’t transmigrating a precious opportunity? He has no power and no money. “Ding-dong! Hello, welcome to the Bank System.” Fine, you want to seize my business? I’ll mortgage it first! You want to take my territory? I’ll mortgage that too! He’ll build his power base with the Bank!