Kabaneri of the Iron Fortress: Season 1

On the island country of Hinomoto, the hayajiro Kōtetsujō, an armored train, is attacked by several Kabane, humans transformed into undead creatures by a viral infection, and the bushi defeat them. However, a bushi is bitten, forcing him to commit suicide to avoid becoming a Kabane. At the train's destination, , Ikoma, a steamsmith, is working on a powerful piercing gun to kill the Kabane. The Kōtetsujō arrives at Aragane Station and Ikoma steals some Kabane body parts. Kensho, the leader of the

Ikoma, discovering that he has stopped the Kabane virus from infecting him, tells his fellow steamsmith Takumi of his success with his bolt gun and anti-virus technique. Meanwhile, survivors of the Kabane attack fight a defensive battle within Aragane Station while seeking an opportunity to escape in the Kōtetsujō. Mumei arrives dressed in battle gear and offers to clear the way so Yukina, the sole remaining engineer and an apprentice, can commander the Kōtetsujō. She leaps into the midst of the

Episode 1 The story begins with a retelling of the TV Series focusing on events leading to the Kōtetsujō travelling to the town of Unato. The town is dominated by a hilltop castle which has become a nest of kabane and threatens the population. Ayame and Kurusu with Ikoma hold a meeting with Kuroji of the Federal Forces, General Mogari of the Echigo-Tora-Ohuki and Unmo representing the Unato population. Kuroji plans to use the Narukami, an armored hayajiro with giant cannon mounted on board, to b

Kurusu rescues Ayame, just as the Kabane appear in the woods surrounding the Kōtetsujō, and everyone gets back onboard. Still fearful of the Kabaneri, the Six Chiefs, led by Akoji, has Ayame hand over the Kōtetsujōs Master Key. To Ayame's dismay, Akoji reroutes the Kōtetsujō for the mountains to provide a shorter route to Kongokaku, in spite of the increased danger posed by the Kabane on the exposed mountain path. Then, Akoji dispatches a chief to get Takumi and fellow steam smiths Kajika and Su

Ikoma helps the bushi develop weapons to kill the Kabane and Ayame declares the Kabaneri are the bodyguards of the Kōtetsujō. The train arrives at Yashiro Station which was attacked by Kabane who still remain within. The Aragane passengers rescue some human survivors, who talk of a Black Fog before the attack. Mumei meets Enoku, a crippled fighter still loyal to her brother the Young Master. He warns her that the shogunate is acting suspiciously by stockpiling weapons and advises her to complete

The Black Fog is revealed to be a colony of Kabane fused into one giant beast. Unable to leave, the Kōtetsujō retreats to the station workshop and they seal the door. Ikoma finds Mumei trapped under rubble and tries to release her. The committee discuss their options of whether to leave or stay. Unable to free Mumei, Ikoma leads the Kabane away from her and kills as many as he can before succumbing. Kurusu and some others rescue Mumei, and she runs to find Ikoma who is badly wounded, and they al

The Kōtetsujō arrives at Shitori Station, which is still occupied by humans, but are only allowed to stay for a couple of days. Ayame exchanges something of value to purchase bamboo for the Tanabata ceremony so people can hang their wishes on it. They are then offered food and other provisions in exchange for the jet bullets technology invented by Ikoma. Mumei reveals to Ikoma that her name was Hozumi before she became a Kabaneri, and he promises that he will make her human again. The next day t

Biba Amatori is introduced to Ayame and reveals that he is Mumei's 'older brother' in name only and has been disowned by the shōgun. The Kabane attack Shitori Station and Biba takes his Hunter squad and destroys them all, and kills a re-emerged Enoku, who he accuses of betrayal. He then offers to accompany Ayane's group to Kongokaku and she accepts, and so, after being coupled, the Kōtetsujō and Kokujou depart. Ikoma suspects that Biba turned Mumei into a Kabaneri and gave her the name Mumei for

The Kokujou with the Hunters is refused entry to Iwato Station, the last before Kongokaku, by the shōguns samurai. Ayame decides to part company with the Hunters and asks Ikoma to get Mumei. Lord Maeda, leader of the fortress agrees to a meeting with Biba on the condition that only women and children accompany him. During the meeting, Mumei leaves the meeting saying that she needs to go to the toilet and lowers the Iwato Station's drawbridge to let Biba's Kabane into the station. Biba then kills

Biba and his troops are now in control of the hayajiro and its passengers, using their blood to feed his Kabane. Biba offers a deal to Ayame that if she can open the gates to Kongokaku, and arrange a meeting with his father, he will guarantee the safety of her people. He tells her of the time when his father sent him with 400,000 troops to Kyushu to fight the Kabane, but when replacement supplies failed to arrive, they were overrun and wiped out, for which he blames his father. Meanwhile, Ikoma

Ikoma is still alive, washed up on the shore and is found by Kurusu (who went missing in the previous attack). Biba injects Mumei with the same liquid that he used on Horobi to turn her into a Nue. The Kōtetsujō arrives at Kongokaku and announces that they have captured the men who destroyed Iwato Station, so they are allowed entry. Ayame pretends to have Biba prisoner because her crew are being held hostage, and they are taken to meet the shōgun. Biba tricks the shōgun into holding a sword tain

Ikoma and Kurusu enter Kongokaku, drawing the Kabane towards them. Ayame appeals to the humans to stop attacking each other in fear and entreats them to leave Kongokaku with her people in the Kōtetsujō. With Kurusu's help, Ikoma is able to reach the Mumei Nue. He destroys the hayajiro Kokujou in the process when the Hunters try to drive it into him with his additional powers since taking the black serum. Mumei seems to be unaware of what she's become, recalling memories from the past and imagini