A bizarre virus turns people into monsters, and the only way humanity can survive is to keep tight control on those who are infected. In this dark and menacing world, all who are infected must be killed to prevent the spread of the virus!

The Kamiyadori virus has spent the world into further chaos. Vivi and Rady are trapped in the Deep Isolation Temple, hiding from Yotsume and his malicious army. Will Jillald stop Yotsume before he finds Vivi or Rady?

Clevort remembers caring for a young boy, Azoto, like a son. As fate would have it, Azoto is more than your average child! He is the "lost Completion," a near-perfect version of the kamiyadori. For some unknown reason, the Cathedral has been trying to develop the perfect kamiyadori. And since Clevort had liberated his host body, there is the possibility that Azoto's "ghost body" may still be alive.

The veil on Jillald's mysterious past is lifted with a flashback to the events that led him to become a Right Arm. How he met Alisa is also revealed, as well as a shocking truth about Alisa herself! But even more unexpected is how the Kamiyadori changed Jillald's life forever...

For years, the "Searchers" - young, genetically enhanced female trackers - were the first line of defense against the Kamiyadori plague. The Cathedral, the organization behind the Searcher program, depended on these girls to give the human race a fighting chance. But the system is far from perfect... and as it breaks down, the tide slowly turns in the Kamiyadori's favor.

Kugaya is a teenager who lives with his aunt, Sakuri. The kendo coach at his high school, Narugami, has been after him to join the kendo team, but when he meets the new girl, Takemi, his life takes a supernatural turn and he is thrust into an epic battle with the demonic "Intruders." Reincarnation... buried memories... the Holy Sword... "Himuka"... and the Clan of the Swordsmen... It's all too much for a high school student to bear!

Hitaka Kugaya continues to battle the "Intruders," still an unknown entity to him. Although he manages to avenge his murdered aunt, he is racked with guilt over the possessed humans he has had to "purify"... and swayed by the words of "Intruder" Tsubasa Saino.

Hitaka Kugaya, member of the Clan of the Sword, has been reincarnated in order to "purify" psychological life forms from another dimension. In his battle with the intellectual Invaders, Tsubasa and Yukue, the Holy Sword Himuka takes over his right arm and smothers him, but he is rescued by his fellow Clanswoman, Kanata, and his high school kendo coach, Haruka Narugami.

Hitaka Kugaya, scion of the Clan of the Sword, continues his battle to "purify" invaders from another dimension, although he has yet to regain his right arm, which has been consumed by the Holy Sword, Himuka. One weekend, Hitaka's kendo coach, Haruka Narugami, takes him to meet her grandfather, a retired swordsmith. There they are shown a tanken (short sword) made from "Hihiirokane," the same material as Himuka...

Kanata, the reincarnated Mirror-Bearer from the Clan of the Sword, has been kidnapped by Invader Tsubasa Saino. The Mirror is a divine instrument that sends the souls of the oppressed back into the vast reservoir of vengeful spirits. Tsubasa is now attempting to reverse that process, creating a massive gateway into the world of humans.

The cataclysmic effects of the Day of Mass Insanity will affect the citizens of the capital until they die. Families were torn asunder and friendships were destroyed, but for Hitaka it was a rebirth. He regained the use of his sword Himuka, and had his arm restored to normal, but for everyone else it's become a memory of fear and a reason to trust no one.

Kagura is perfectly happy living a normal, leisurely life... until an adorable little girl shows up in his house one day and starts calling him "Daddy"! As his once-normal life turns upside down around him, he sets off to unravel the child's mystery, embarking on a journey which will change everything...