Paper Sumo 紙相撲
Sumo is a traditional Japanese wrestling, as you know.
This paper toy is also our traditional culture from the past.
You can beat the paper box, which is dohyo 土俵, with your finger. The toy is very simple and rare nowadays.
It’s interesting because there are many kinds of wrestler, such as animals and characters.
This is the video which my daughters were playing it.
We say, “はっきょいのこった”（Hakkyoinokotta) when wrestlers begin to fight.