The Kotetsujyo picks up survivors from Yatsushiro Station which has been destroyed by the Kabane. Among the survivors is Enoku, an old friend of Mumei's. He points out to Mumei how weak she'd become as he witnessed how close she's grown to the people of the Kotetsujyo. Rattled, Mumei chooses to throw herself into a reckless fight and finds herself in a dangerous situation.

The Kotetsujyo is standing before a giant cluster of Kabane, the Black Smoke, and all seems hopeless. Meanwhile, Ikoma and Mumei find themselves at the bottom of an abandoned station. Surrounded by Kabane, Mumei buried under rubble, and no backup in sight, the situation is dire, yet Ikoma still somehow stands forward to face it.

The Kotetsujyo had been linked to the Kokujyo, and Takumi and the others were under the rule of the Hunters who demanded their blood be collected.While people fell into despair, not everyone has given up hope as Ikoma devises a counteroffensive.He has to take back his freedom, his pride, and Mumei.