B'T X Neo
Genres: Action, Adventure
Type: OVA, Episodes: 14
Aired: Aug 21, 1997 to Jan 21, 1998
Studio: TMS Entertainment
Source: Manga
Rating: PG-13 - Teens 13 or older
Synopsis:
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)