S1, E4: With Chou-sensei defeated, the real bad guy is revealed: Hakuanshi, a servant of Kentei who was manipulating him for his own purposes. Hakuanshi uses more powerful generals, and more than just one. Even with the help of his mysterious classmate Ryofu, Sonshin has no choice but to flee. But Hakuanshi isn't willing to let him go easily...