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Kurahashi has a small build and is slightly plump. He wears glasses and the hair on his shiny forehead is parted on one side with a ratio of seven to three. Asuna described Kurahashi as being in his early thirties.
Kurahashi was Yuuki's doctor since she was little and had been helping her to overcome her human immunodeficiency virus (HIV). He was the one who suggested using the Medicuboid to the family.
When Asuna went to visit Yuuki in the real world, she met Doctor Kurahashi at the hospital. While heading to Yuuki's ward, he told Asuna about Konno Yuuki's condition and her family history.