>>71472
Yes. They have a daughter in the book whom he cherishes, and the lord who commissions something from him, and gives servants to get tortured so they can take inspiration to paint hell on a folding screen, until they try to go to bed with the daughter, but she manages to avoid it, an in his anger towards that, makes the final "inspiration" his daughter trapped in a carriage burning alive, along with their pet monkey.
Ryoshu just watches the carriage burn, transfixed by the imagery, and not really doing that much to stop it, and paints the final layer of hell, then promptly hangs himself from grief, then the book ends.
If I had to make a random guess, maybe our Ryoshu hasn't finished the painting, and ran off leaving it unfinished, and a big part of the canto will be the "emperor" figure trying to get her to finish the work, and immortalize what she saw.