Sayoko Nanamori is Itsuki&#039;s research assistant. She is shown to hold unrequited feelings for Itsuki, and to react angrily if anyone touches on the subject. This leads to a small running gag in the series: Whenever she is particularly upset about Itsuki, the windscreen wiper on her car is shown to make an interval swipe on its own. Episode 8, &quot;The Dreaming Stone,&quot; revolves around Itsuki giving Nanamori a crystal pendant as a Christmas gift; the crystal (taken from the remains of the Dolem Forzando) grows into the Dolem Sforzando, absorbs Nanamori, and alters the weather on Nirai Kanai to create blizzard-like conditions matching the state of Nanamori&#039;s feelings. She is freed by Ayato in the RahXephon, and later enters into a relationship with Makoto Isshiki and supplies him with information, thus unwittingly keeping the B&auml;hbem Foundation abreast of Quon&#039;s status. Nanamori struggles with memories of her family, but it is later revealed that she was given false memories and was programmed by B&auml;hbem to love Itsuki. Nanamori ends up killing Itsuki by stabbing him. Distraught over Itsuki&#039;s murder and the truth of her false memories, she kills herself.    In other versions  In the movie, Nanamori appears only in a glimpse. In the manga, Nanamori is a malevolent Mu agent and facilitates Ayato&#039;s escape from TERRA.    wikipedia

In the year 2012 Japan was invaded by the Mu. Human-like beings from another dimension with blue blood. 
In the year 2015 Tokyo is attacked by invaders, who are repelled by a humanoid weapon called a Dolem. During the chaos, Ayato Kamina meets Reika Mishima, a classmate. 
During that same day, he is attacked by government officials but a woman named Haruka comes to his rescue, informing him that she was sent to get him by the Organization TERRA, and that Tokyo had been sealed in a time rift where time flows one third as fast as the outside world. 
He flees from Haruka onto a train where he sees Reika once more. Arriving at the Room of Rah, he follows her to a tremendous egg where the Dolem RahXephon is hatched from, and upon her singing his mother appears atop the Dolem that had stopped the TERRA Invasion. In the battle Ayato's mother is injured, and Ayato flees Tokyo Jupiter with Haruka upon seeing his mother's blue blood.

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Atsuko Satou, known professionally as Atsuko Tanaka, was a Japanese voice actress and narrator.

Her most-known roles are [Medea](https://anilist.co/character/3440/) in [Fate/Stay Night: Unlimited Blade Works](anilist.co/anime/19603/), [Motoko Kusanagi](https://anilist.co/character/1795/) in the [Ghost in the Shell](https://anilist.co/anime/43/) franchise, [Lisa Lisa](https://anilist.co/character/21960/) in [JoJo’s Bizarre Adventure](https://anilist.co/anime/14719/) and [Konan](https://anilist.co/character/3179/) in [Naruto: Shippuden](https://anilist.co/anime/1735/). In video games, she voiced title characters Lara Croft in the Japanese dub of the Tomb Raider games, Bayonetta in the Bayonetta: Bloody Fate film adaptation and Bayonetta 2 and Kyrie Ushiromiya from Umineko no Naku Koro ni. She attended the Tokyo Announcement Academy where she studied voice training in 1991. In 2012, a Biglobe poll named her the voice actress with the sexiest voice.

Tanaka was married and had a sister. She also considered [Kikuko Inoue](https://anilist.co/staff/95195/) to be her best friend. Mother of voice actor [Hikaru Tanaka](https://anilist.co/staff/168156/Tanaka-Hikaru).

On August 20, 2024, it was announced that Tanaka passed away at the age of 61.

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