Japanese saying ~4~ おo

I tell you a Japanese saying that begins from お(o)
That is Oni ni Kanabou　おに　に　かなぼう

Maybe I need to explain well.
Do you know "Oni"? Traditionally, people have the sense of fear to "Oni".
If you go to hell after death, there would be a lot of oni ther.
I guess there are a lot of old drawings that describe this oni.
You know, there are horns on the head. And there are fangs on the mouth.
His eyes look angry.
And I explain the Kanabou　かなぼう
Kanabou means an iron rod. (you can see obove)
This saying means, "that will give you a double advantage".
When someone who is strong get something advantage, you use this saying.

Thanks for reading!

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