An animated pilot film for Ninja Bugei-chou released to the public over three decades later on Ninpuu Kamui Gaiden DVD volume 7. The pilot film was created in 1969 as director Nagisa Ooshima was wanting to make a TV animation to build off his controversial film from 1967. The pilot was rejected by Shirato himself (the original comic creator the film was based on) and the plan was changed to animate Ninpuu Kamui Gaiden instead, a side story to the Kamui Den manga also created by Shirato. Though with this change, Ooshima did not partake in Ninpuu Kamui Gaiden's production.

Shi Jiajie and Xiao Lei, who used the game as a livelihood, accidentally received the entry of the "Epoch" game. In order to win a huge prize in the game, Shi Jiajie decided to enter the game. As everyone knows, but it is involved in the inexplicable pursuit, but this is only the prelude to this layer of conspiracy…

Researchers involved in the research organization code-named "Mattamore" are frightened to death by the never-ending nightmare they are living in. Bai Xi, a university graduate who is ordinary yet unusual, and Han Zhuo, a mysterious and powerful esper who is near-omnipotent, set out with a group of steadfast friends on a spectacular path to salvation - those dark corners where the sun never reaches, always need a person to shed a tear to light the way.

Legends speak of a Dark Tower with a race of dragons that awaits the command to arise and wreak havoc. At least Kyle used to believe they were only legends until his lady, Alita, is stolen by the Black Dragon! Now Kyle must form an alliance with Blau, a blue dragon, in order to rescue her before she becomes the catalyst for the Dark Tower's final program: the complete destruction of the world!