Battle B-Daman s02e36
Titre original : Melody of Betrayal
The gang end up in a wild desert full of sandstorms. Haja returns. This time since he was close to dying he says he wants to help Yamato and his gang.
It appears then that the gang is surrounded by Jinbee, Phantom, and Veeder. They corner Yamato and pushes him against the wall. The entire gang tries to fight off, but it appears that Haja was actually saved by Bedeus and now serves under him! By showing his true colors, Haja betrays the gang, but the gang manages to barely escape, losing track of Akyulus.