With Yuuto back in Yggdrasil, now it's his turn to retaliate!At last, our hero has returned to Yggdrasil. Having turned Steinþórr's army away with his "Empty Fortress" strategy, Yuuto sets out to attack and drive off the invading Panther Clan immediately."I can't afford to dawdle at a time like this."Back from Japan with new tools and tactics in hand, it's time for Yuuto to raise the banner of counterattack, in this intense whirlwind of a ninth volume!!