Onigawara, look at the roof of a Japanese house
It is a character with a scary face on the roof
I always ride on top of temples and houses
However, onigawara is a generic term
Onigawara that is commonly imagined is a demon face tile.
It is called Namitatsu Onigawara
There are other patterns such as waves, which are shaped like waves.
Onigawara has the role of amulet and amulet.
As you can see from the name Onigawara,
the reason why demons are carved is because
it was believed that
"oni will be on your side" and "oni will ward off evil".
Currently, it is installed as a tiled roof structure,
but the onigawara was installed with the meaning
of "amulet" and "exorcism".