Warner Bros. Japan are in production on the animated feature, “Batman Ninja vs. Yakuza League”, directed by Kamikaze Douga and Shinji Takagi, as a sequel to “Batman: Ninja (2018):
“…in the first film ‘Batman Ninja’, ‘Batman’ travels back to Japan's ‘Warring States’ period…
“…and defeats villains including ‘The Joker’, who have now become feudal lords…”