Dragon and Spellbreaker

A dragon who wanted to become a mortal broke away from her own race thousands of years ago and became a civilian emperor on her own. As a price, she was voluntarily imprisoned and promised not to release her magic power for the rest of her life. Thousands of years later, several human mages with different personalities released the prisoners. The dragon has grown up, but it is a pity that the heroes who assisted him no longer exist. Without boundless magic power and great determination, can people in this era still achieve the great achievements they did back then? Does it take pain to grow?