B'T X

Synopsis

Teppei sets out to reunite with his older brother Kotaro Takamiya, who is attending a scientific conference, after spending the past 11 years training under a mysterious woman named Karen. But his hopes for a family reunion are dashed when a woman named Aramis massacres everyone at the conference and kidnaps Kotaro. On his journey to rescue his brother, Teppei comes across a broken mechanical horse called B't X, which is revived by Teppei's blood and becomes his ally in the fight to save Kotaro from the enigmatic Machine Empire.