Ichika says of her friend Michiru, "She's really into literature, and her instincts are amazingly sharp." Due to being a miko and having the "power of vision", she can allegedly see ghosts and spirits, and is a quiet, if not shy, person. Michiru has a younger sister named Rui, of whose feelings she appears to be rather protective. Michiru is prone to making slightly odd comments and is unable to swim in the sea, claiming her skin is sensitive to saltwater. She tends to speak in a subdued tone of voice.