I didn’t know about this movie. I visited Hokusai museum and I enjoyed it very much. I loved the scrolls of Sumida river, unfortunately my video of it in digital display didn’t come out.
北斎 lived in samurai period but draw for the commoners. In Edo period, the commoners had more money than samurais. Edo culture was advanced by the commoners. It's like Mozart written operetta for commoners, but his expression was in painting..