Would You Like To See A Trick? (Genshin Impact Fanfic)

A boy who suddenly find himself been summoned in another world of Teyvat where he been gifted with a System known as the Thief System. Now, with the help of the System and newfound power, this boy with embrace in a new journey of his life to become the World's Greatest Thief. Furina: Hmp! Mark my words Phantom Thief. I, Focalor, will unrevealed your mask and bring you to justice! ???: Then I will gladly welcome it, Lady Furina.