Kaleidoscope no Mukougawa

, is a Japanese light novel series written by Miki Yuuei, with illustrations by Puyo. The series began publication on March 10, 2007 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Michihiro, an ordinary boy who is worried about the meaning of chocolate given to him on Valentine's Day by the chairman, Michihiro, meets a strange duo of a beautiful woman in a suit and a girl in a kimono on the way home from school. The woman in the suit calls herself a purifier, Yoshino Kadokura, and the girl calls her a familiar, Sayo, but Michihiro cannot hide her turmoil in her self-introduction, which deviates from everyday life. According to Yoshino, Michihiro is a "sympathizer" who can see ghosts, residual thoughts, and other things that ordinary people cannot see. Yoshino forces Michihiro to help her get rid of the grudges