Warner Bros. Japan is producing a sequel to Batman Ninja titled Batman Ninja vs Yakuza League.

Junpei Mizusaki, the producer of the opening animation sequences for JoJo's Bizarre Adventure and JoJo's Bizarre Adventure: Stardust Crusaders and Kamikaze Douga CEO/founder, is returning from Batman Ninja to direct the film alongside Shinji Takagi (unit director for Blood: The Last Vampire). Kamikaze Douga is again animating the film. Returning staff members also include scriptwriter Kazuki Nakashima, character designer Takashi Okazaki, and composer Yūgo Kanno.
Kōichi Yamadera returns to voice Bruce Wayne/Batman.
Warner Bros. Japan will host the "Warner Bros. Japan presents Suicide Squad ISEKAI and Batman Ninja vs. Yakuza League" panel at Anime Expo on July 4. The panel will reveal more details for the film.