She is Yamane's elder sister and the professor's assistant, she is cold and heartless towards Iwai. She allowed herself to be Yamane's "Instead" as a way to relive her from the blood lust due to the pressure of killing goods that she possesses by allowing Yamane to inject her with a saline solution as a way to act out the latter's murderous intend. it is hinted that she has gotten so used to it, that she develops a kind of sexual arousal everytime Yamane does that sort of thing.  Just like any participants of the " Murderer's Game" both she and Yamane also desires the wish that comes with killing the "Hair Queen" who happens to be Iwai.  (Source: ANN)

Haimura Kiri is a seemingly ordinary boy with one slight problem: he is obsessed with cutting other people's hair. One day he meets Mushiyanokouji Iwai, the "Hair Queen" who cannot cut her hair because of an inherited curse. Kiri finds out that his scissor, "Dansai Bunri no Crime Edge" is the only thing that can cut them. But little did he know that their meeting sparked the start of an old murder game to kill the "Hair Queen" using the cursed killing tools, the "Killing Goods." Can Kiri protect Iwai from the Killing Goods Owners? Let the game begin!


[Profile](https://osawa-inc.co.jp/women/uchiyamayumi/) | [Twitter](https://twitter.com/yuumin_uchiyama)

On January 1st, 2025, it was announced that she had gotten married to voice actor [Yuusuke Kobayashi](https://anilist.co/staff/118407).

__Non-Anime Roles:__
• Tera Isezaki in "Marco & The Galaxy Dragon" (VG) (Japanese)
• Natasha in "Honkai: Star Rail" (VG) (Japanese)

Haimura Kiri is a seemingly ordinary boy with one slight problem: he is obsessed with cutting other people's hair. One day he meets Mushiyanokouji Iwai, the "Hair Queen" who cannot cut her hair because of an inherited curse. Kiri finds out that his scissor, "Dansai Bunri no Crime Edge" is the only thing that can cut them. But little did he know that their meeting sparked the start of an old murder game to kill the "Hair Queen" using the cursed killing tools, the "Killing Goods." Can Kiri protect Iwai from the Killing Goods Owners? Let the game begin! <br><br>
(Source: MangaHelpers)

Houko Byouinzaka