It an old anime "Oni"

[Hakunoe]

By any chance does ya know of this anime "Oni" i forgot what come after "Oni" but it an old anime where the hero got a hidden power and transform into a Oni

I remember only part of it so to put into a short summary of first ep i would say the hero chase a giant wild boar through a forest and the giant boar was kill near a cliff then he return home to his dad/gramp house they talk for a little while then he left the house to go outside for some walk after coming back his dad/gramp house was on fire he suddenly transform into a Oni and save his dad/gramp from the burning woods that is falling down

That pretty much of what i remember from it so anyone know of this anime please post here