Kabuto used orochimaru's chakra to increased impure world resurrection power. Their mind and personality disappear slowly. Haku asked Kakashi to stop them again before he lost his mind completely. Kakashi told him a little flashback about Zabuza and Naruto. That Zabuza didn't see him anymore as a tool, and he cried to hear that. But now, both of them become Kabuto's tool, and this battle would be though. To fight with the bloodline limit like The Demon Zabusa from the hidden mist, Haku from the cursed Iced Element Wielding Yuki Clan, Gari a former member of the blast corps and Paku from the sand village scorch element, the squad join army cannot drop their guard down. It's feel like fought with mummy, Kakashi's army has started being pressed down. It's looked like their problem not stop decreased but even more increased after The last generation of the seven swordsmen of the hidden mist has being summoned.