Unfortunately, we have no details about the plot of "Batman Ninja vs. Yakuza League". However, we already have the following information regarding the cast: Koichi Yamadera (as Batman (voice)) & Yuki Kaji (as Robin (voice))
Unfortunately, we have no details about the plot of "Batman Ninja vs. Yakuza League". However, we already have the following information regarding the cast: Koichi Yamadera (as Batman (voice)) & Yuki Kaji (as Robin (voice))