Fantasy World

He was fired from his party for not having enough magic
Gets odd jobs, repairing the city wall, hired as a miner
He doesn't believe in his abilities, afraid of being fired, cute
Has more mana than a court magician, very fast at work
Able to find crystals in rocks, makes crystals 10x the power

The king order his assassination for winning too many battles
He’s a mercenary devoted to the kingdom, faked his death
Moved back home, met by a girl, called him papa, same hair colour
His family grows, adopting a magical wolf, a knight, the saintess
His daughter needs a high education, moved to the city, academy

If he’s killed by the hero, great retirement plan
He overestimated the hero’s strength, killed him
The mage was pregnant with the hero’s child
He would raise/train him as a next hero to kill him