Hibari’s classmate. She loves reading and can always be seen holding a paperback book of some sorts in her arms. Compared to her peers Yuzu is slightly more poised and mature. She dreams of becoming a writer but due to her strict family and her sickly younger brother she is hesitant about following this path. At one point she took playwriting classes with Hibari and they end up becoming friends.
​Learning about CYGNUS.CC’s world through Noel, something inside her has started to change.

Yuzu has the ability to point out what Hibari is really thinking and to put those thoughts skillfully into words. She is the person Hibari would go to for advice.

Since Hibari doesn’t smile much Yuzu has always felt a little concerned about her friend, but lately Hibari seems much brighter and expressive. A fact which Yuzu is incredibly happy about.

​​渋澤ひばりのクラスメイト。
周りより少し大人びたクールな女の子。読書が好きで、いつも片手に文庫本を忍ばせている。図書室の住人。
作家になりたいという強い気持ちを秘めているが、厳しい家に生まれ育ったこと、体の弱い弟のこともあって進路を迷っていた。そんな折、ひばりと創作劇の授業を通じて仲良くなったことや、ノエルから教えられたCYGNUS.CCの世界を知り、その心境に変化が訪れる。

ひばりが無意識で考えていることを察し、上手く言語化したり、アドバイスをくれたりする。

普段あまり笑うことのないひばりをずっと気にかけていたが、最近少しずつ表情が明るくなってきたことを嬉しく思っている。