The Duke's Grimoire[western Fantasy]

Feared by countless people, Steven, the Grand Duke of Yuequan, Zoebo of the Goluo Empire, picked up a book. The name of the book is "The Gem Box Story Collection". After picking up this book, many strange things happened around him. It's not important. The important thing is... He turned into a goblin whose height is only one palm long! ! ! Lord Duke: I'm really in trouble. Conception: