Avatar: Mage of All Elements - Chapter 90

“I will be the strongest sorcerer in the world!”Ash said, with her mom chasing right behind trying to spank her for not finishing the vegetables.In a world of 8 different elemental attributes, a girl was born with a humble and basic [Fire] attribute, yet she grew up to be a narcissist with a flaming ego and a fiery loud-mouth. All because the first skill she used at the age of 5, was an unparalleled SSS-Rank [Fireball]And she would soon learn that this world wasn't so accommodating to her antics.

Emperor Ian Veroshion, the first noble mage, was betrayed and executed. Cursed to never be reborn, he awakens a century later as the illegitimate son of a disgraced ducal line, destined to be a hostage in a barbaric land. Stripped of his magic and his throne, he must navigate a world vastly different from the one he ruled, facing political machinations and a resurgent monster threat. But the embers of his past life still burn, and Ian will not surrender his legacy. He will reclaim his name, his magic, and perhaps, even his empire.

In an era when the power of Fire Magic was considered to have reached its limit, one girl began researching nuclear fusion.

Follow Chen Ming as he accepts disciples, establishes a sect, and fights his way in a world that deems him a cannon fodder.
He goes against any common sense using his wits and novel knowhow to finish missions and arm himself against his cruel fate.

- Description from Novelupdates