Teppei is going to visit his older brother Kotaro Takamiya during a scientific conference after training with a mysterious woman named Karen for the past 11 years. However his plans for a family reunion become stalled when a woman named Aramis kills everyone in the conference to kidnap Kotaro. Teppei on the way to save his brother encounters a broken mechanical horse called B't X who revives thanks to Teppei's blood and is now his aide to save his brother from the mysterious Machine Empire.

Continuation of Teppei's journey with B't X to rescue his brother Kotaro Takamiya from the Machine Empire. The OAV series picks off from the TV series from the point where Hokuto successfully saves both Teppei and B't X and makes B't X far more powerful than before. (Source: ANN)

AD. 2023, Tokyo. Because of the change of the society such as internationalization and enlargement of the trading, the dark side of the society also continues changing. The criminals are getting deep, and their organizations are increasing its size, then the peace and security is getting worse. The government takes it seriously, and decides to introduce an innovative system. In order to cope with the special criminals, an extralegal police is founded. It is a special criminal team, Warriors, which consists of a few elite members. (Source: AnimeNfo)

Hideyoshi is a homeless boy living in New York in the near future, who survives by hustling other kids in basketball games. But now he's been drafted into a pro team-a pro team with a very unique goal. There once was a time when humans dominated the game of basketball. But times have changed, and now the physically superior alien players have taken over the game, and there are barely any human players left. But Hideyoshi's team-the first all-human team to compete in the Space League-intends to change all that, and bring the championship back home to Earth. (Source: ANN)