White Dragon! But its evolution template is Ultraman Monster!

A remnant soul from another world, a pristine white dragon body, and an Ultraman monster template system. Placed in a pot, they fuse and transform. A true dragon of calamity, more ferocious than a white dragon and more terrifying than an Ultraman monster, descends upon the world! When Lynn opens his eyes, templates of Red King, Gomora, and Hyper Zetton are bestowed upon him. From then on, his breath can destroy cities and shatter boundaries, his scales can withstand countless spells, and his dragon might can suppress all things in the heavens. When Lynn spreads his wings and soars, white mist engulfs the sea of ​​clouds, his dragon might shakes the earth, the stars dim, and all races are filled with fear! An ancient scroll records: "Wind and snow devour the sky, frost covers the world, the beast descends upon all directions, and the universe is annihilated!" Wherever he goes, holy light dissipates, and gods and demons retreat! Some call him the Starry White Dragon, some call him the Dragon God of the End, and some call him the World-Destroying Calamity Beast. Some worshipped him as a god, while others cursed him to eternal damnation! But Lynn didn't care. Reborn as a dragon, all he sought was freedom from all taboos and the ability to do as he pleased! (The author has actually been with a dragon; this isn't just speculation.)