alt Hacker NewsIf you are talking about page order or panel order (in something like manga), those go right to left. More specifically, manga panels follow the usual western comic book panel order, except with left and right flipped.
However, when it comes to the actual text (regardless of the medium), it is always written either top to bottom or left to right. There is no right to left text writing in japanese. This isn't arabic, where text is indeed written right to left.
When written top to bottom, the columns are read from right to left. This is the most common format for printed text, especially in Hokusai's time.
Also, when text was horizontal, it was frequently written right to left until the mid-1940s.[1]
[1] https://www.mutantfrog.com/2009/08/08/the-history-of-japanes...