In Ultraman, I Got a Ben 10 Watch from the Start

Diya transmigrates to the Ultraman universe, to a Earth plagued by frequent monster attacks. His only cheat is the Omnitrix watch from Ben 10, but it contains no alien hero DNA. With no other options, he joins the Earth Defense Force's logistics department. By a stroke of luck, the watch-like Superpower Device successfully records the DNA of the Abulbas, an alien from Planet Standel, officially activating the universe's strongest genetic System.