Reborn! The Neo B't X - S1.E21

Hokuto has indeed rescued Teppei AND X! B't Max rebuilt X into the Neo B't X!! Bigger, badder, and better than ever! X and Teppei were flying away from B't Max when they were attacked again, this time by Balzac and his B't Savanna. Teppei and X are much more powerful than before and this enemy is no match for the Neo B't X! Episode summary graciously provided by Vortex Fansubs