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Characters: World Embryo
Characters from World Embryo. Needs More Love
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Riku Amami

Riku is the story's protagonist and a high-school student who lives with his father (absent for most of the story) and stepmother, Shizuru. He was in love with Shizuru's younger sister, Amane, but she is presumed to have died two years ago in a fire at Kazama Hospital. He receives a text message from her phone address and goes to the place of her death, providing the setting for the start of the series.

After sustaining, near start of the series, a fatal wound from a Kanshuu, Neene turns Riku into a special Kanshuu that can retain his own consciousness as long as he has a Jinki.

Rena Arisugawa Ootori

A young Jinki user who is depicted as a quiet and serious person focused on her job, who frequently takes the lead when fighting Kanshus. After Youhei's death, she becomes Riku's partner, whom she appears to have become attracted to, after their meeting with the Source of Infection. She is a Lost Rebound victim; her entire family was killed in Hatsumi Island during the original infection and became Kamogari.


Neene was hatched from a coccoon at the start of the story, and grows at a rapid rate, experiencing a growth spurt occurring each time she uses her powers in a Kanshuu fight. A mysterious entity who has an uncanny resemblance to Riku's dead aunt Amane. Neene recognizes Riku as her "papa" and later Rena as her "mama".

As the series progresses, she demonstrates various powers, such as turning Riku into a Kanshuu after he is wounded in a fight and creating a giant ball of light that disintegrates anything inside it. She is eventually revealed to be a Kyuuki/Coffin Princess, a queen Kanshuu who receives the memories stolen by other "drone" Kanshu, and she grows as she absorbs more memories.
  • The Cutie
  • Daddy's Girl: Neene. Played for laughs. Later also Mommy's Girl with Rena.
  • Famous Last Words: "Liar".
  • Happily Adopted: By Riku, who becomes her papa. She later "adopts" Rena as her mama.
  • Heroic Sacrifice: Neene sacrifices herself to stop rampaging Ende. Made more poignant with her calling Riku a liar, while it is clear that he has begun to sincerely care for Neene, not just as Replacement Goldfish for Amane.
  • Identical Stranger: She strongly resembles Amane, prompting people to think that she must be Amane's daughter or at least a close relative. The truth is that her nature as a Kyuuki means that she is actually Amane, or more exactly that she will become Amane.
  • Plot-Relevant Age-Up: Neene grows faster than a normal child. She ages as she absorbs memories.
  • Replacement Goldfish: Takao tells Riku that if he raises Neene she'll grow up to become Amane. But as the story advances Riku begins to care for Neene as just herself, "his daughter", and not as a replacement for Amane.
  • Rose-Haired Girl
  • She Is All Grown Up: After a three months Time Skip after her supposed death she appears to have grown older, looking the same age as Amane, in fact it may be because Amane's ego has woken up.
  • Shipper on Deck: Riku is her papa and Rena is her mama.
  • Sprouting Ears: Neene does this at crucial moments. Normally they are also present, but closed.
  • Token Mini-Moe
  • Younger than She Looks: She is born looking already like an almost two years old child. And as the story advances she keeps growing older, even though she should only be a few weeks old.


Shirou Karasawa

The main antagonist for the first half of the series, he was known as the Source of Infection that creates and controlled the Kanshuu. Shirou is the son of the elder Tokiji, who lived with his mother after a court case drove them away. When his mother died, he went to see his father but was denied the privilege. That day he met Sayoko Tokiji, who showed him kindness, and thus he fell in love with her. Since that time, he has also sworn to destroy his father, the head of Tokiji and worked his way into the company.



A type of new creature that devours memories, the Kanshu are made through a virus which can travel through electromagnetic waves, and can also infect through Television, radio, and speakers. The virus takes over the consciousness of the infected, effectively destroying it. Anyone that becomes or is killed by a Kanshu is forgotten completely, with few exceptions.


Takao Mishima Ryuusei Takao

An organization that fronts as a cell phone company, they handle the Jinki Users and Kanshuu incidents.

Sawako Tokiji

Tokiji Sawako is the Chairwoman of F.L.A.G. and one of the heirs to the Tokiji Company. In the past, she was engaged to a man called Karasawa, and she was pregnant with his child. After turning into a Kanshuu he was captured but he could apparently still control his mind, he talked her into releasing him by claiming he was in pain and then attacked her. The resulting injuries rendered her unable to bear children anymore, and she stated that the attack also killed the child she was pregnant with.

She became a manipulative woman, willing to drive Riku in a rage if it meant bringing an end to the Infection. She disappeared after Ende's attack and has been recently shown to be hospitalized in a sort of comma.
  • Always Identical Twins: She and Sayoko were almost identical, except Sayoko had a scar on her face.
  • Angsty Surviving Twin: She forgot about her twin sister Sayoko, given that her loss would be too much for her to handle.
    • When she finally remembers her she starts crying and exposes herself to a really dangerous situation.
  • Beauty Mark: Under her left eye.
  • Bitch in Sheep's Clothing: She's good at hiding it and Riku only saw through it at first with help from the "Source of Infection" Shirou.
    • She is not a bad person at heart.
  • Incest Is Relative: Unknowingly to her she was in a relationship with her uncle, as Shirou Karasawa was her grandfather's illegitimate child.
  • Kind Hearted Cat Lover: She has TEN cats.
  • Laser-Guided Amnesia: She doesn't have any recollection of ever having a twin sister, at first.
  • Replacement Goldfish: She was more or less this for Shirou.
  • Theme Twin Naming: "Sawako" and "Sayoko".
  • Trauma Conga Line: Sawako has had a rough time since finding out that her former fiancee was "alive", not only he didn't even care about her he openly mocked and scorned her. Then when she finally remembers her sister Sayoko and goes to confront Ende, hoping that she may recognize her but Ende doesn't and she categorizes Sawako as her enemy and tries to kill her.
  • Well-Intentioned Extremist

    Annex Division 
The department that handles underage Jinki Users.

Youhei Takebe

Youhei is a Jinki user and Rena's partner. He is depicted as an optimistic and cheerful person. Before the series began, he and Riku met during their stay at the hospital and became fast friends. At the start of the series, Youhei and Rena rescued Riku when he was first attacked by Kanshus. His Jinki resembles a short blade and was given to him by his teacher, to save him from Kanshuu-inflicted wounds. In an ironically similar situation, Youhei ends up entrusting his own Jinki to a wounded Riku. At his own request, he is beheaded by his old friend before he could become a complete Kanshuu.

Hayato Tsukishiro

19 years old, Department leader of the annex division. He looks out for the underaged Jinki users and is shown to care about them greatly, not even hesitating to disobey the chairwoman's orders so as to protect his subordinates. He was Youhei's former partner before Rena, and has a Jinki as well.

Joe Kirishima

Clara Kirishima

    Reserves Department 
The department that Jinki users get sent to when they are running out of power, they handle the Lost Rebound victims.
  • Adult Fear: There are over 30 Jinki Users in the reserves department, but the majority don't fight. They know that their deaths would lead to them being erased from memories and are terrified because they have too much to leave behind, such as children, that can't go on without them.
  • Sacrificial Lion: Did they all really have to die?

Nanami Kiritani

President of the Reserves Department's "Jinki users mutual aid society" (a.k.a. The Meeting Of Flags). She works as a volunteer counselor, going around the hospitals and homes to lend a hand on taking care the Lost Rebound victim. Her Jinki "Nuiyami" has the ability to revitalize other Jinki Core, although it can't repair the one that already damaged.

     Riku's Family 

Shizuru Amami

Riku's stepmother, she witnessed Neene's birth and acts as a surrogate mother to Neene. She was originally a student of Riku's father, but moved in with her sister when their father died. After 8 years, she married his dad and they lived as a family ever since.

Amane Sasamori

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