Ex, 19, a former E-rank adventurer.

A mage of extraordinary talent, specialized entirely in [Effect Duration Extension], he became an adventurer at 14 and diligently worked for five years.

However, though precocious as a mage, the boy was inexperienced in life.

His good-naturedness led him to be exploited by the adults around him, forced to work like a slave year-round, and endure days of ridicule.

Finally collapsing from overwork, he woke up at his doorstep one day with tears streaming down his face, finally confronting his true feelings.

"I'm quitting this job!"

Ex, who could only use basic magic, was regarded as nothing more than a convenient slave. However, as the effects of his unusually long-lasting basic spells began to expire one by one, the situation gradually grew more serious.

By the time they panicked, realizing no one could replace Ex, it was already too late.

Whether they threatened him or begged him, he'd simply smile and refuse everything.

"I'm absolutely never working again!"