In a world where heroes are born, not made, Ein’s god-given gift is the weakest: the power to appraise things. Treated cruelly by his peers, Ein spends his days in self-abasement—until he meets Yuri, the spirit of the World Tree. Yuri and her protector, Ursula, bless Ein with the Spirit Eye, unlocking new strength. As his abilities grow, Ein embarks on a journey to uncover his true purpose.