Miss Hokusai is the story of real person Katsushika Ōi. Well, stories of real person Katsushika Ōi. The anime is an episodic memoir mostly about Ōi (voiced by Anne Watanabe) and her younger sister, O-Nao (voiced by Shimizu Shion). The film doesn’t specify but they’re half-sisters, daughters to famous Japanese Edo period artist Katsushika Hokusai…