Slaying the Dragon and Becoming a God, Is This the Cleaning of the Dragon's Nest?

The evil dragon is raging in the Klein Continent and is tyrannizing. Mir was reincarnated into a slime and worked as a cleaner in the dragon's lair. With no limbs or facial features, he relied on his racial talent to secretly become stronger. Annihilation dragon scales mimic dragon scales, annihilation magic items acquire skills, annihilation elemental life acquires form changes... When he gathered all the fragments of the Titan's godhead and merged them to become a god, there was no longer an evil dragon in the world. … Facing the king's request, Mir looked embarrassed. "Writing a dragon-slaying outline? Isn't it easy to kill that thing?"