A21

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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...