Aura Battler Dunbine

After a motocross accident, Show 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, Show is approached by Marvel, a woman from Earth, who convinces him of Luft's sinister intentions. (myanimelist.net)