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Konishi (小西) is a student in class 1-C.


Konishi is a young girl with shoulder-length dark violet hair that is topped by a white headband with bangs hanging over her forehead and light violet eyes,

She wears the standard school uniform of Hoshinoumi Academy's Middle School.


Konishi is madly in love with Oikawa, another student of Ayumi Otosaka's class. Because the boy was attracted to Yū Otosaka's sister, Konishi wants to get rid of her rival. Konishi is a yandere; she apparently seems to be a polite, shy and kind girl, but she later turns out to be a sadistic, violent and aggressive girl.


Konishi has a crush on Oikawa (Konishi's classmate), but ever since Ayumi Otosaka transferred at school, Oikawa seems to have forgotten about her, later, she attempts to kill Ayumi with a box cutter, but fails after Ayumi awakens her "collapse" ability and destroys the school building, after Ayumi's death, Yū Otosaka uses the "time-leap" ability to revert the incident, Yū appears to bluff Konishi and makes her run away in fear.


  • The surname Konishi means "small" (小) (ko) and "west" (西) (nishi).


  • Konishi is the first yandere character in the KEY series.
  • Because Konishi's actions caused Ayumi Otosaka's death and Yū Otosaka's depression, she became the most hated character in this series by fans.
  • Konishi looks oddly familiar to Utaha Kasumigaoka from the Saekano series.