Corpse Princess: Aka

Makina Hoshimura, a deceased teenager, is given her first mission to eliminate dead corpses on Earth. Her target is Hagino, a criminal accused of killing women, who came back from the dead as a vampire corpse.

After several children killed in a highway accident come back to life as corpses, Makina is dispatched to kill them. However, Ouri Kagami gets in the way when one of them pleads to him to help her escape. Keisei and a band of anti-corpse monks assist Makina to take down the child corpses.

Makina is tasked to hunt down an unknown Corpse responsible for killing off young women. Keisei learns that someone familiar with Corpses is using a doctor to conduct illegal experiments on dead bodies in order to turn them into monsters.

Makina is dispatched to assassinate Kun Osaki, a J-pop singer who became a Corpse after refusing to accept her death because of her wish to continue singing. Armed yakuzas are, however, instrumental in fending off the first attempt when an unknown monk warns Osaki's manager. Keisei gives Makina a hand in killing Osaki.

A Corpse disguised as an SUV roams around the Greater Tokyo Area, killing off anyone who dares to enter it. Keisei tells Ouri the true nature of his job, which results in his suspension unless he kills Ouri. A new Shikabane Hime team arrives, namely Itsuki Yamagami and her contractor priest Takamasa Sougi, to deal with a rogue Kougon cult priest.

Makina defeats the SUV corpse after being assisted by Keisei. The rogue priest is revealed to be Akasha, a member of the Kougun cult who went underground due to his radical views of using Corpses as instructed. Keisei uses a cube filled with the blood of dead corpses as a shield to temporarily defeat Akasha, who retreats. The entire Kougun cult is shocked to learn that Akasha has resurfaced while contemplating plans to reinstate Keisei back with them.

Ouri encounters an ex-high school student named Mitsuyoshi, who had somehow turned into a Corpse with telekinetic abilities after dropping out of school. Despite Makina and Minai's intervention in trying to kill him, Mitsuyoshi's abilities and his fighting strength somehow hampers their efforts in subduing him.

Minai defeats the Corpse, Mitsuyoshi, with some help. After killing him, Ouri has his cell phone taken away for "evidence" by Minai. After school, Minai and Ouri go buy a new one together. Later Minai's contract priest is killed by a group of thugs making Minai a normal Corpse. She is hunted down by other shikabane hime, but escapes with Ouri's help. He takes her to the bar where he works and says she will be safe there. There, she is told that if she makes a contract with Ouri she will be able to survive as a shikabane hime. She then kills herself (or is killed), saying that she is Shuuji Isaki's shikabane hime.

Makina saves a bunch of students from a Corpse, specifically Kasuka (nicknamed Omune-sama), a girl who later becomes infatuated with Makina's beauty of death. Later, Ouri investigates what happened to Minai from Makina with no success. Curious about Ouri's insensitivity towards death, Makina approaches Keisei asking why he is so compassionate towards the Shikabane. Keisei shows us a flashback of Ouri's first appearance at the orphanage, where we see an emotionless 3 year old Ouri. He had been detached from the world until he rescued a kitten crying by the riverbed. In a tragic twist, that cat died shortly after from a car accident. Ouri, affected by this incident, is aware of death constantly. Kasuka visits Makina bad mouthing Ouri, suggesting he would never know Makina like she does. Makina defends him by stating he knows more about her (death) than Kasuka ever will.