A little bit of culture :
Oni (鬼, Oni) 👺are a kind of yōkai from Japanese folklore, variously translated as demons, devils, ogres or trolls. They are popular characters in Japanese art, literature and theatre.
They are ferocious demons, bringers of disaster, spreaders of disease, and punishers of the damned in Hell.
I wanted to have a little bit of fun with this culture and create a little world out of it :)