Rising Shadows of the Fallen Moon (KNY/MHA Yōkai AU crossover) (Rewritten)

This story was inspired by a few Akaza Deku and Kokushibo Deku books.

Fumikage and his twin brother, Hikari, have been dreaming to become heroes since they were toddlers. However when they gained their quirk, Hikari had to be sent away to be under the care of their father's grandfather to learn how to handle his Yōkai Demon heritage...Now, they reunite at UA to become Pro Heroes.

However, ghosts of the past have been arising from their ashes to continue what they had started. A vengeful Yōkai ancestor, Muzan Kibutsuji, and an Onryō Queen...have returned.

Now, Fumikage, Hikari, their friends, who are descendants of the Onryō Slayer Organization's Yōkai Hashira, descendants of former Onryō, or reincarnations of old friends or foes of the Demon Slayer Corps, must unite and embrace their heritage to protect their newfound families. Along the way, secrets linked to Fumikage and Hikari's past will be revealed alongside the truth to why Hikari was sent away to be raised by their grandfather, Tsukikage.

My Hero Academia belongs to Kohei Horikoshi

Demon Slayer belongs to Koyoharu Gotouge

All ocs belong to me.

And there will be some aspects of the Yōkai Realm or the fauna and flora there that were inspired by James Cameron's Avatar as well as some Yōkai features that were inspired by Pokemon.