Baku

《Demon slayer + Male reader》

Ah, the legendary Baku.

A 'demon' says to eat nightmares.

"Baku-san, please come and eat my nightmares!"

A child who calls out for baku will have their nightmares eaten, thus allowing them to sleep peacefully. But legends also said, those who call Baku-san playfully,

Will have their body eaten too.