Strong Mouth Dragon King

A terminally ill boy travels through time and becomes a dying iron dragon cub, activating the "adaptive evolution" system! Being bullied by others? Just in time to practice fighting; Meet the Fire Phoenix? Borrow fire to stack resistance; Face the Frost Giant? Evolve with a giant axe! From the cheap and cute dragon cub who seeks hatred and gang fights, to the invulnerable iron dragon overlord. Augustus soared all the way in the blood and fire of the wasteland, and finally became the Dragon Lord who shocked the world!