for those interested in kuronet [1] and the competition alex gave a presentation here (en, [2]) as did tarin (ja, [3]).
for those interested in classical japanese literature, you can see the tools they've built here [4]. tarin is also very active on twitter [5].
[0] https://www.kaggle.com/c/kuzushiji-recognition/discussion
[1] https://arxiv.org/pdf/1910.09433.pdf
[2] https://youtu.be/e2-mVBvygm8?t=1428
[3] https://youtu.be/e2-mVBvygm8?t=537
Extraordinary.
On a related note, does the first text region not look an awful lot like the Japanese main island of Honshu?
https://www.nationalarchives.gov.uk/palaeography/doc5_popup/...
But as ever, Japanese ramps up the difficulty because there are thousands of characters instead of 26 letters to deal with.