Kiryuu Kasumi

A mysterious girl who only appears for one night in the game, forced by Suginami to go ghost-hunting with Jun'ichi in Kazami Academy. Like Mako, she is a tomboy and also easily frightened. She is looking for the spirit of her younger sister Asumi who supposedly died in a traffic accident.

Spoiler

Actually, she is the one who had died in said accident, and finally departs this world after being told so by Asumi. She appears in D.C.F.S. as a sub-character.