Reiko Kashima (カシマレイコ, Kashima Reiko)? is a demon appearing in the series.
A Japanese ghost, Reiko Kashima is a female ghost without legs who also lives in school bathrooms. She'll call out "Where are my legs?" when people enter the bathroom. If the person answers incorrectly, they will have one of their legs torn from their bodies. The correct way to answer her varies. In one version the answer is "...at Meishin Expressway", and after saying this she will ask who told you that, the correct answer to this would be "Reiko Kashima."
"A Japanese ghost that appears in the restrooms of elementary schools. She asks people a question when they enter a toilet late at night and rips off the legs of those who can't answer. She is said to be a woman without legs. She inquires, "Where are my legs?" to which you should answer "At the Meishin Expressway." She will then ask you "Who did you hear this from?" The answer to this is. "From Reiko Kashima". She will disappear without causing you harm."
—Devil Summoner: Soul Hackers 3DS Compendium
Persona 2: Eternal Punishment
Reiko will appear in Sumaru TV after spreading the rumor gotten from the Frightened Security Guard. Bringing him Reiko's Umbrella will have him hand over an Incense Set as a reward.