2 Seasons

Episode

Genesis (2011)

Shu Ouma is a 17 year old teen who has poor social skills who lives in Japan where it is under the strict rule of the government organization GHQ due to the Apocalypse Virus ten years ago. While going to his warehouse studio, he encounters Inori Yuzuriha, internet singer of the band Egoist, who is recovering from her wounds after stealing a formula called Void Genome from the GHQ. After mending her wounds and feeding her, Inori is captured by the GHQ Anti Bodies division led by Major Guin and Shu is powerless to stop them. To make amends, Shu brings the Void Genome to Inori's boss, Gai Tsutsugami, leader of the resistance group, the Undertakers at Roppongi. However, Major Guin orders the Anti Bodies to exterminate the residents of Roppongi in order to find the Void Genome. As the Undertakers and GHQ battle, Shu goes and rescue Inori and protects her when a GHQ Endlave mech tries to attack them. The attack breaks the test tube holding the Void Genome, giving Shu the "Power of Kings" where he pulls out Inori's Void, a large sword and destroys the Endlave.

Directed By: Tetsuro Araki
Writer: Hiroyuki Yoshino

Survival of the Fittest (2011)

After destroying several GHQ Endlaves, Shu, Inori and the Undertakers are forced to retreat when an advanced Endlave joins the battle ridden by 2nd Lieutenant Daryl "Kill 'Em All" Yan, a narcissist officer who hates being touch on the grounds people are infected. After regrouping with the others, Gai congratulates his hacker Tsugumi and Endlave pilot Ayase Shinomiya but scolds Inori as he wanted the power of the Void Genome but instead was given to Shu. Never the less, Gai still wants the "Power of Kings" and asks Shu for help. When Guin holds a group of innocent civilians hostage where Daryl and several soldiers execute some of them and orders the Undertakers to surrender themselves, the Undertakers trick Daryl to drive his Endlave away from Guin's command center where the Undertakers have a stand off with Guin's men. Using the stand off as a diversion, Shu heads to the truck that holds Daryl's cockpit where Shu pulls out Daryl's Void, a weapon called Kaleidoscope. When Guin fires his laser weapons at Gai, Shu uses Kaleidoscope to shield Gai and deflects the lasers back at Guin and his men, killing them. Despite seeing the atrocities the GHQ does and what the Undertakers are fighting for, Shu declines to join them as he feels he is no hero. But the next day to his surprise, Inori has transferred to his school.

Void-Sampling (2011)

Shu is still shocked that not only has Inori transferred to his school but is living at his home as well. Gai reveals to Shu that he sent Inori to protect him because a student at his school who is secretly a drug dealer nicknamed Sugar saw him during the Undertakers battle with the GHQ at Roppongi and confirms Shu's suspicions that Gai can see other people's Voids. Because Gai only recognize Sugar's Void as pair of large shears, Shu has to confront his fellow classmates one by one and take out their Voids to confirm their identities. After several failures and escaping the wrath of class representative Kanon Kusama, Shu soon figures out Sugar is actually his friend Yahiro Samugawa, after figuring out Yahiro knows a lot of things he shouldn't know and his taste of horror films. His identity exposed, Yahiro angrily shows his true self before Shu subdues him by pulling out his Void. Inori tries to kill Yahiro but Shu stops her as Yahiro is still his friend where both he and Yahiro resolve their difference and not reveal each other secrets. But the next day, Yahiro betrays Shu by selling him out to the GHQ led by Major Makoto Waltz Segai.

Directed By: Taku Yonebayashi

Flux (2011)

Shu is arrested by the GHQ much to his classmates shock and worry. He is sent to GHQ Isolation Facility Four where he remains silent about the Undertakers. Upon learning Gai and the Undertakers will attack the Facility to rescue their "comrade", Major Segai brings Shu to the Isolation ward, revealing Yahiro sold him out so his brother, a victim of the Apocalypse Virus, can get treatment. Furthermore, Major Segai justifies GHQ's harsher actions for the safety of Japan and uses Shu's feelings for Inori and his doubts about Gai. He reveals that the "comrade" Gai wants to rescue is mass murderer Kenji Kido, which makes Shu question Gai's trustworthiness. The Major gives Shu a transmitter disguised as a pen that he is to use if he comes in contact with Gai. Later that night, a disguised Gai visits Shu and tells him his plans to rescue Kenji, however, Shu doesn't want to be involved. Tsugumi informs the two that Inori has disobeyed Gai's orders to stand by in order to rescue Shu. Shu, worried, goes to save her, forcing Gai to change his plan. Protected by Ayase's Endlave Steiner, Shu heads to where Inori is at until he encounters Kenji himself and uses his Void, a Gravity gun to stop the GHQ Endlaves and rescue Inori. After Isolation Facility's destruction, Gai offers Shu to follow him. Shu reluctantly agrees, however, he keeps the transmitter given to him and does not inform Gai of his exchange with the Major.

Preparation (2011)

Shu arrives at the Undertakers Headquarters at Roppongi Fort where Gai introduces him to the Undertakers and plans to hold a trial for Shu before he can officially join them. Gai assigns Ayase as Shu's instructor while he leads a mission to take over "Leukocyte". Ayase dislikes Shu but is only training him because it was Gai's orders and Shu has to pass the trial as Ayase has his pen, unaware it's a transmitter but she will only give it back after passing the trial. After some hard training, Shu encounters Inori, telling her that he joined the Undertakers because of her and asks her if she will join him if he wanted to leave the Undertakers. But Inori tells him she won't because Gai gave her a life and purpose and claims Gai told her to use his feelings for her to join Undertakers before entering Gai's room. Dejected, Shu runs away and bumps into Ayase, who consoles Shu and gives him some encouragement for tomorrow's trial. Unknown to both of them, despite what it seems, Inori is actually giving Gai a blood transfusion. On the day of trial, Shu has a mock battle with Ayase's Steiner where if he gets past Steiner and into the vehicle behind it, he will pass the trial. Shu succeeds the task after using Arugo's Void to blind Steiner and get into the vehicle where Ayase and the Undertakers congratulate Shu of the becoming one of them. Just as Kenji arrives, the Undertakers receives a troubling report from Tsugumi. Gai earlier led a team to intercept the arrival of mercenaries and Endlaves at an airport but their position was shoot by Leukocyte, an orbital satellite laser.