Shonen Onmyouji(2006)

Shonen Onmyouji is an anime series following Masahiro, grandson of the legendary onmyōji Abe no Seimei, who has lost the supernatural sight essential to his family's craft. Unable to see spirits and demons, he abandons his birthright for a different path. Everything changes when a peculiar mononoke named Mokkun appears and reveals Masahiro's dormant potential through a fierce battle with a demon. Together, the unlikely pair embark on a quest to restore Masahiro's abilities and prove himself worthy of his ancestor's legacy. Blending action, magic, and coming-of-age themes, Shonen Onmyouji explores what it means to reclaim power and purpose when tradition seems lost.