''Black Lion'' is a 1992 OVA produced by Creator/GoNagai.

The OVA tells the story of UsefulNotes/OdaNobunaga, a 16th-century warlord intent on conquering all of Japan. With the help of [[TimeTravel time-traveling]] aliens from the future, he is able to further his goals with Jinnai, an invincible cybernetic samurai who hates ninjas. With these unconventional allies, the victory of the warlord and his mechanized army seems all but assured.

Enter our young hero, {{ninja}} Shishimaru, the sole survivor of a battle where his girlfriend and comrades are killed by Jinnai. The story follows his quest for revenge, as he faces hordes of mechanized enemies, evil samurai and aliens, with the help of a formerly hostile sect of fellow ninjas.


* {{Cyborg}}: Jinnai.
* {{Gorn}}: And lots of it.
* {{Ninja}}: Shishmaru and the allied ninjas.
* NoOneCouldSurviveThat: Played practically to the point of parody, with the number of times the ninjas fail to kill Jinnai.
* {{Roaring Rampage of Revenge}}: Jinnai and his family were killed by ninjas; when he was brought back and made immortal, he wants to kill all ninjas.
* RoboticReveal: Combined with FingerTwitchingRevival.
* SequelHook: Ends on a pretty blatant one.
* StuffBlowingUp: At a certain point, the ninjas' strategy against Jinnai becomes "double the explosives we used last time, repeat as necessary".
* TakingYouWithMe: Jinnai at the end, to Shishmaru. [[spoiler:Doesn't work.]]
* TimeTravel
* WhatHappenedToTheMouse: Things are left unresolved at the end. There was probably supposed to be a sequel, but there never was one.