Is there a supernatural novel about a king of another world, telling the story of a fat man turning his fat into muscle?

😋I recommend "Krypton Player" to you. This sci-fi novel tells the story of a lucky transmigrator who becomes the fat man behind the main character. He can only rely on the main character's help to maintain his life. After losing 10 pounds in a day, he realized that muscles had grown on his body. He could turn the fat on his body into muscles through the Krypton Meat System, and finally became the king of the Otherworld. I hope you like this fairy's recommendation. Muah ~😗