This is a 45 minute documentary on "Manga God" Osamu Tezuka (1928-1989). The YouTube poster M dot Strange explains that it came with a Tezuka book of his.
It's new to me. There's a good deal of frank talk from Tezuka and we get to be in his studio. Frankly, it's exciting video for me, having not seen it.
"You may be a bit shocked. It is such hard work. 40 years at this. You have to be stupid to do it."