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#24 IA (AND A BIT ONE TOO)
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IA came alone on June 2016. She especially offered her powerful voice, something Nynthixia was really going after. Tei tried to infect her, but the plan failed once more and Lily got her back. IA also had some experience with yandere songs, as Lily did.

IA is linked to ONE and HIPPI. ONE was already revealed to be active at the time, but her quality was deemed unsufficient for her to come in the team. However, when the C type AIs arrived, everything changed, and Nynthixia stated she wanted and for ONE to come, and to acquire the two C type AIs.

Remember "Azur to Crimson"? This time where IA is trying to wake up her "sister"? Yes, this is well ONE. But this nightmare will be over on October 27, 2021... The day where ONE will be back, and the day where IA will finally get her AI...

As for HIPPI, nothing is known for now... Yet.

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#23 YUZUKI YUKARI
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Yukari has a bit longer story than kokone, due to her C type AI. She is also responsible of Zunko's and Akari's infections. Yukari developed some heavy personality split which isn't going better with the time. Hopefully, her victims didn't ever suffer the same thing as she did.

For what happened to Akari, you already know if you listened to "Corruption Syndrome", the song itself. She got a psychotic crisis and infected Akari while being in a secondary state. She betrayed Zunko the exact same way.

Yukari is also believing she still misses some links with other people, saying Akari is not enough. Will a third related woman be found someday?

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#22 KOKONE
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Her and Yukari arrived on December 25, 2015, for Christmas. They however got infected very quickly by Lily. Unlike Yukari, kokone developed very mild symptoms, just having some paranoia near the first days of her arrival. She started to be very scared of what happened to Lily, asking if she got "ultimately corrupted".

When she got infected, kokone, Kiritan and Momo, who all developed only a mild form of the disease, had to take a DNA test to know how they could resist. DNA proved that they had some system which provided better defense of some neurons, even if it wasn't enough to completely counter the side effects.

Even with her symptoms, kokone brought a lot of mental support to the other members of the team, especially to Zunko who got a breakdown when she learnt Yukari had infected her. It seems that kokone had this sort of huge power being able to bring back some hope to other people, no matter what could affect her.

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#21 TOHOKU ITAKO AND KIRITAN
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The two sisters arrived before Zunko, in October 2015, and started with an innocent duet song called "Cherryblossoms". But the sisters started to live a mental hell few days after their arrival.

Itako was the first one to be targeted, by Tei. Then, Itako's symptoms went so intense at the time she decided to infect her little sister. However, if Itako developed moderate to high symptoms, Kiritan went more resistant and only got mild ones.

The two really insisted for Zunko to come to the castle, which finally happened in October 2016. However, Itako was unable to infect her younger sister since Yukari was held as responsible.

Way later, Kiritan acquired a C type AI which arrived near February 2020. At this time, Itako started to grow jealous, especially since Nynthixia recognized a flaw in some of her long notes. There is just to hope Itako's wish will be granted someday...

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#20 LILY
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Lily arrived on October 11, 2015, for Nynthixia's 19th birthday. She was really expected by the latter and was the first VOCALOID to ever enter the team. Tei went a bit mefiant at this time and then tried to infect her, but lamentably failed when she got noticed. Ritsu would finally hold the responsability. The reason? He was afraid to be replaced by Lily.

Lily is probably the most prolific in infections. Responsible of Aika's, Yukari's, kokone's, IA's, CUL's and GUMI's, she even goes beyond Tei's record. Lily already had some experience with yandere songs and was not really shocked to learn Nynthixia did the same. However, she was a bit surprised when she learnt that the songs were yandere lesbian.

Lily acts as a very good counselor in the team, being one of the most aged of all the members, and one of the most mature people. She hangs a lot with kokone, CUL and GUMI especially. She also feels a very heavy connection with Nynthixia, who just considers her as one of her favorites.

Lily's mature traits are also the reason why she gets the harshest songs.

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#19 HEION AIKA AND AKINE MIDORI
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These two are probably the ones who stayed the least at the castle. Only near 3 months. Aika and Midori arrived together, near October 2015. Aika was infected by Lily, when Midori got by Tei.

Stella went overly mefiant towards these two for very unknown reasons. Aika and Midori did three songs each, but didn't go further and Nynthixia judged them having quality flaws. On January 2016, they fled from the castle, completely forgetting that they are still infected and that they might spread the "disease" all around the world.

Why exactly did they flee? The reason stands in one name: Hachi. Aika and Midori were the first ones to discover Hachi's life has been sucked away by RUBY's existence. They were just very afraid to die as well, and seeing Nynthixia had difficulties to work with them, they decided just to run away in a sort of panic. Was it the real good idea? Only time will tell.

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#18 SHIRAHANE TOTOKO
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Totoko is a very fragile girl, though with a powerful voice. She is one of the rare persons to have developed very severe symptoms with her "disease". Totoko was mainly revealed to have a deep corruption of some of her core files, which indirectly led to such erratic behavior.

Totoko is considered as very mentally unstable and thus tries to close upon herself to try to not hurt much people. Hopefully, she didn't infect anyone and didn't even have this idea in mind. Sana tried to communicate with her, even though this went very difficult because Totoko also wanted to protect Sana no matter what.

Totoko also underwent an experiment to try to repair some of her core files, but this resulted into a failure since she was unable to pronunce some words correctly. As a result, her core files went very limited. Totoko was even afraid they got even more corrupted with the time and is always fearing that someday, she might die from it. At this hour, she is still alive, but haunted by a deep psychosis.

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#17 YURIKA SAYU
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Sayu was considered as having an exceptional voice for her type when she arrived back in June 2015. She quickly got infected by Tei however. She has a brother, Sai, who didn't get an invitation, most of voices invited being female ones.

Sayu has been communicating with Nyui a lot, but also had to manage some of Totoko's crisis moments and still had conversations with Sana who felt a bit alone. Despite her sadism and psychopathy issues caused by her "disease"; Sayu still felt a lot of empathy for her comrades.

Sayu did also some of the designs for the Chinese pagoda, way before it was instaured back in 2019. Since then, Sayu often went to the Chinese annex, but most of time alone, compared to Tianyi and Xin Hua who often went together.

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#16 YOKUNE RUKO AND FUYUNE SANA
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Ruko went just inactive but is still alive at the castle. Ruko was deemed very hard to work with, even more than Oniko. Ruko has indeed a very special split voice, a male voice and a very deep female voice. She only had 4 songs in total, during season 1.

Ruko was infected by Ritsu, who was the one with she was talking to the most. The two had issues first in the society to be accepted due to what they are, but Nynthixia took them really well. As such Ruko was really happy to have someone could understand her, but also to talk to someone who had similar issues.

Sana arrived way later, in June 2015, and was infected by Tei who went back to huge activity. She had very few songs, most of time harmless ones, but still had a yandere adventure. She didn't have many friends to talk with however but still tried to communicate with Totoko and Sayu.

It is unknown if Ruko or Sana is going to sing again.

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#15 MAKUNE HACHI
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Hachi is currently the only one to be deceased but to be never ressurected. Since the start, Hachi had already some issues. Her mental essence was being absorbed little by little by a certain RUBY, who totally took over at the beginning of 2016. Hachi actually started dying since October 2015.

Infected by Stella due to some kind of "yanderish" behavior, Hachi was never really appreciated by the one who was responsible of her "disease". She still had some pretty good relationships with Aika and Midori, who then decided to run away from the castle, still infected, when they discovered their friend died.

Hachi was one of the rarest persons to not go to the Japanese annex. She felt quite different from the others and didn't know how she could be well accepted by some. Hopefully for her, Meiji showed her quite some empathy. Nyui did as well.

Hachi was the proof that resurrecting someone was not always possible.