On his fifteenth birthday, Eyan Valcrest receives a strange golden coin from his grandfather and is told it is the family legacy.
But that legacy comes with a price.
Eyan is the third-generation grandson chosen to repay an old debt left behind by his grandfather.
And somehow, he ends up with SSS-rank magic...
and -99.99% luck.
Now he has to survive strange worlds, impossible missions, and endless disasters...
if he ever wants to become the true heir.