高島 一子

Ichiko is, in fact, a ghost. Her story begins 22 years ago: a previous Elder (actually Mizuho's mother) had a close relationship with an underclassmen who had a weak body. When that underclassman was in hospital, she could not wait to see the Elder. The underclassman got away from the hospital, went to the Elder's room, and waited, but she died before she had the chance to talk with the Elder. That room has been deemed the "closed room" ever since, until Mizuho arrived and started living in it, according to his grandfather's will.

She is very energetic and hyperactive, often talking very fast. She took some time to understand that she is a ghost, and by that, dead. She says that Mizuho looks very much like her previous Elder love interest. Although she can touch people, she cannot pick up objects and she slips through walls. Invisible barriers prevent her from leaving the dorm, but her movable range has extended to the school site after a certain event. Also, she has a capacity for spirit possession and this  helps Mizuho in a critical phase once.

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