Aura Battler Dunbine.

After a motocross accident, Sho Zama was pulled from Japan into the mystical world of Byston Well, where he and others from Earth were reicruited by Lord Drake Luft to pilot his newest weapons, the Aura Battlers, a combination of Byston Well magic and Earthien technology. However, in the heat of battle, Sho is approached by Marvel, a woman from Earth, who convinces him of Luft's sinister intentions.