I'm a Black-Hearted Lord in a Foreign Dungeon

Red accidentally traveled to Little Butter and became the lord of a monster dungeon that was on the verge of bankruptcy. And he unexpectedly discovered that he could bring out items in the game, including mountains of gold coins, various magic props, and even a monster girl who fell in love with him! Since then, all kinds of strange things have appeared in the real world. "Red's Monster Manual": Skeleton thighs are ground into powder and sprinkled into fields to help with crop yields, and the skeletons are happy to trade a bone for lubricant to avoid osteoporosis. The zombie's own body maintenance techniques help the corpse be buried, but the zombie demands to eat some of the customer's brains. It was very safe and quick for a vampire to suck out blood from wounds, except that she didn't like the smell of sepsis. Succubus horns are renewable resources and are suitable for use in medicine, magic props and handicrafts. Unfortunately, Chris requested that they not be sold. It is a pity, otherwise it would be at least three years in prison in the real world. Other monsters are yet to be discovered. . . .