Battle Arena Toshinden

Shinjuro may be a little young to be the master of a swordsmanship school, but fate didn't give him a choice. Now his position and martial arts skill land him in the middle of serious trouble when the rogue samurai Mikage faces off against the Tokugawa government, and Shinjuro and the small group of swordsmen who train at the school must now protect the town from harm. However, the group won't be challenged until the Tokugawa house calls in a favor, and the young swordsman is forced to duel Mikage himself.

October 1941, as the second World War threatens to destroy the civilized world, an unforeseen complication suddenly occurs. An alien invasion! Despite the sudden appearance of these extraterrestrial aggressors, the Axis and Allies continue their destructive conflict. Only the Kishin Corps and their giant Geo-Armor Robots (a.k.a.: Kishin), developed from a captured alien robot soldier, stand between the Earth and total annihilation! A teenager, named Taishi, suddenly finds himself at the center of a struggle over a mysterious black attaché case entrusted to him by his father, Professor Tokamura. The case contains the controlling mechanism for one of the giant Geo-Armor Robots, and the Japanese Kanto Army, the alien invaders, and the Kishin Corps all want to recover the device! Between the spies, the armies, the aliens, and the Giant Robots, Taishi is in for an epic adventure - if he can survive it!

Continues from where the original series left off. The characters try to settle their conflicts with each other in this 2 episode OAV. Aya confronts her sister Maya about Nagi, while Nagi receives a challenge from Mitsuomi to fight to the death. Meanwhile, Bob trains as hard as he can for the tournament.

Years ago there was an underground match between Pro Wrestling and Nanshin Shadow Style (a secret and deadly form of martial arts) to see which form of martial arts was dominant, The Nanshin Shadow style came out victorious in the battle. Now in the present, the man who was defending Pro-Wrestling is back and is out to destroy Nanshin Shadow style in any way he can; however, it is now up to Kiichi, the son of the previous victor to defend the name of Nanshin Shadow style and it is his job to keep it from being completely erased from existance.