B'T X

Teppei Takamiya sets out to reunite with his older brother, Kotaro, at a scientific conference, having spent the last eleven years training under the enigmatic Karen. However, his plans take a dark turn when the event is violently disrupted by Aramis, who kidnaps Kotaro amid the chaos. Determined to rescue his brother, Teppei embarks on a perilous journey that leads him to a damaged mechanical steed known as B't X.

Revived by Teppei's blood, B't X becomes an invaluable ally as they confront the formidable forces of the Machine Empire. Together, they navigate a world filled with advanced technology and treacherous adversaries, all while Teppei's resolve to save his brother strengthens. The adventure unfolds against a backdrop of sci-fi intrigue and thrilling battles, as Teppei and B't X forge an unbreakable bond in their quest for justice and family.