Raven-coloured aura burst out from Eru's body, surrounding him, making his demeanour more powerful. "I call this technique the Eruken", Eru said, his lips slightly curved upwards. "You know what to do, Buddy", Eru talked to the black sword in his hand. Buddy replied by vibrating inside of Eru's grip. The latter nodded, "Right, let's do this!" Eru dashed forward with the black sword in his right hand; Eru struck Lana Valentine in the stomach with the pommel of his sword. Then, Eru swiftly locked Lana Valentine's sword arm before disarming her.