Kasou Taishou on youtube.
Another search term besides ‘Kasou’ or ‘Taishou’ which yields results on you tube is ‘Japanese Talent’
Be sure to watch this karate board breaking one. I had passed it up because it is slow starting, but the ending pays off.
On a side note, this video makes more sense now that I understand: They are making mochi!
There is also a part of Okami where someone is hitting rice in a block with a mallet. These are easier to spot now that I know what this strange mochi type advancing about behavior is.