Kazuya Ichijo

Martial arts masters Ken and Ryu are brought together by the mysterious death of their master but now the two warriors must overcome a challenge unlike any they've faced before. Increasingly disturbed by the dark energies building within him, Ryu is unexpectedly confronted with the appearance of Shun - a boy claiming to be the long-lost brother he never knew.

Teppei and his partner B'T X head to the center of the Machine Empire to save his elder brother Kotaro. The Emperor's B't Raffaello has grown to the point where it can destroy the world, and Teppei must stop him.