Ikoma and the Iron Fortress take their fight to the battlegrounds of Unato, joining the alliance to reclaim the region from the kabane horde.
– Part 1: The Koutetsu Jou arrives in ravaged Unato. After fighting off the Unato kabane, Ikoma notices something peculiar about their attack patterns.
– Part 2: Ikoma is temporarily confined after his violent kabaneri instincts take over. Without him, Mumei joins a team inspecting a possible kabane stronghold.
– Part 3: The alliance’s mission ends in retreat but the fight continues. At the Castle, Ikoma and Mumei learn the truth about the force controlling the kabane.