Kimiko Kujo

Kimiko Kujo (久條 希実子, Kujō Kimiko) is a member of Wammy's House and her identity is widely known as a virus researcher.

Character
Kujo is very passionate about Blue Ship's ultimate goal. She is generally very calm and reserved, but can grow ruthless when the situation gets difficult.

In the novel, she is seen to be very shy and somewhat naïve, though this is a façade. She and Maki seem to have a very close relationship, the two almost like family. However, it seems that the relationship is actually one-sided, Kujo merely manipulating the girl.

She is very intelligent, able to figure out Ryuzaki's true identity and that Suruga is attracted to her. Her innocent demeanor is broken when Suruga discovers her true identity and she uses her charm in order to seduce him.

Film
Kujo first appears working as an assistant to scientist Kimihiko Nikaido in the Infectious Disease Center of Asia. Under orders form Washington, they were to analyze a virus sample taken from Bangnum, Thailand.

After a discussion concerning the effects of the virus, Dr. Kujo suggests that the virus is a weapon, saying. "Many countries are secretly undertaking the development of virus weapons. Some countries succeed." Professor Nikaido then informs Dr. Kujo that the virus weapon has failed, saying, "No, this one is a failure. A virus weapon is a success, only if it comes with an antidote. Otherwise, the user will also be infected. I'm sure there was an antidote, but it's of no use now." When asked why, he replies, "This virus has mutated within the last 20 hours."



Not long after this happens, Watari passes away as prior to the events of Death Note: The Last Name. L writes a message to inform the other members of Wammy's House and one by one, selects the recipients. He is shown hesitating on sending the message to K. K replies almost immediately and writes, "Thank you for the information. It shocked me. I will mourn his death, too. - K"

Later, Professor Nikaido calls Kujo and tells her to come to the lab. Then Kujo arranges for Daisuke Matoba, who is a leader of a bio-terrorist group, and his group to come with her. At the lab, Matoba explains to Professor Nikaido that what they are doing will benefit the Earth's ecosystem, saying that, "If there are too many, all we are doing is decreasing that number." K finds out that Professor Nikaido has indeed created an antidote already. K and company beg for said antidote, but Professor Nikaido does not give it to them. He decides to incinerate the antidote and delete the data for the antidote. He finally commits suicide by injecting himself with the virus.

Afterwards, K and the bio-terrorist group are seen searching through data, trying to look for the antidote. K remembers a code written by Professor Nikaido in his daughter's homework book. Deciphering it ultimately brings up the word "Watari". She contacts L and asks for his help in finding the antidote data and also sets up a meeting with him.

Novel
Kujo starts of with a fairly similar role in the beginning, working undercover as Professor Nikaido's assistant and looking into the mysterious virus that has recently unearthed. Nikaido tells her that he has completed an antidote and locked it away.

Professor Nikaido's daughter Maki enters the lab, telling her father that dinner is ready and forcing him to take off his lab coat as Kujo holds back laughter. Maki asks Kujo, who is her tutor, if she can tutor her again soon, and Kujo agrees. After Maki leaves, Nikaido notes how Maki is becoming so much like her mother. Kujo agrees, saying that the two are exactly the same, suggesting that she had known Nikaido's wife.

Kujo later finds Maki, who is feeding the chimpanzees who are going to become test subjects the next day. She cries, quickly wiping her tears away upon seeing Kujo, and explains that, despite knowing not to, she has become attached to the creatures. She understands that the chimpanzees die in order to save lives, but that all people are doing is hating and killing one another. Kujo asks Maki if she thinks what they are doing with the animals are wrong, and Maki admits that she doesn't know, but that she thinks people should live their lives to the fullest so that the animals don't die in vain, to which Kujo agrees.

Later, having received the needed information from Professor Nikaido, Kujo hacks into the research facility's system and informs Blue Ship of Nikaido's discovery. The members break into the building, drugging a security guard in order to get in. Unlike in the movie, Kujo is not present during Blue Ship's confrontation with Professor Nikaido, and he is instead accidentally killed by a young member of Blue Ship.

After Maki escapes, Kujo tracks her down using a GPS in Nikaido's cell phone that can track down Maki's phone. She appears at the Kira Investigation Headquarters located in Japan. Upon seeing her and finding out from Maki who she is, Ryuzaki brings Kujo through security before allowing her to enter the building. Maki is overjoyed to see Kujo, embracing her and bursting out into tears as Kujo comforts her. Kujo explains how she found Maki, and Ryuzaki informs her of Professor Nikaido's death. Kujo is horrified to hear this, and implores Ryuzaki to let her stay in the building so that she could be with Maki, as she and her father treated Kujo like family and Kujo feels that it is her responsibility to watch over Maki.

Ryuzaki agrees, and FBI agent Hideaki Suruga introduces himself, saying that he is an FBI agent. Kujo, however, tells him that she does not know what the FBI is, much to his disappointment (as he is attracted to Kujo). Kujo stays with Maki, the two spending time together while L monitors Kujo's room 24-7, skeptical that she is there for the reasons which she claims.

Suruga later finds Kujo near the building's main computer, admitting that she was trying to hack into the mainframe. She reveals that she is an undercover agent with the Tokyo Police Department, Public Security Bureau, Third Foreign Affairs Division, a counter-terrorism division. She also reveals that she was aware of Ryuzaki's identity as world famous detective L. Her intentions, she explains, were two retrieve Nikaido's antidote in order to keep it out of the hands of those who plan to use the virus to commit genocide and the antidote to make sure that they lived through it. She asks Suruga what his own intentions are, and he reveals to her that he was sent to retrieve the killing instrument used by Kira so that no one else can use that kind of power ever again. Aware that he is attracted to her, Kujo uses her charm to convince Suruga that they work together.

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