Character profile
Yumi
ゆみBiography
Yumi is Ueda's persocom, originally bought because he was not very good with math.
Story spoilers
Over time Ueda falls in love with and marries her. A hard disk failure later causes her to forget orders and his name. She ultimately pushes Ueda out of the path of a truck and is run over herself, with "Konnichiwa" as her final word.
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