Interesting that this is referred to as Japanese shirt folding. This is how I learned to do it decades ago, and there was no Japanese attribution at the time. I wonder if it is claimed (by whom?) to have been invented in Japan, or if it's just because the video is in Japanese.
And even that is suspect, considering that the Japanese text is nonsense and the clothing is of course not produced in either Britain or Japan[1]. Kudos to them for actually specifying their factories though!
