Within the shadows of Japan, a covert battle wages on. Around 200,000 ninjas still exist carrying out deadly missions as a secret organization, National Intelligence of NINJA, or NIN. But a challenger arises: UNDER NINJA. Known as UN, these ninjas … Taito Ban, Atsumi Tanezaki, Tarusuke Shingaki, Tasuku Hatanaka, Kouichi Souma, Chika Anzai, Cho Added on Amazon Prime 2023-10-16.