Mao Satomi  

, 里美 真桜

Satomi Mao and Tetsu Harisugawa were childhood friends due to an accident that occurred when they were young. In this event, Harisugawa saved Mao while getting injured himself. Despite the fact that several years later, it was Mao who ended up being saved by Harisugawa again, this time through a mirror that Mao had purchased near the scene of their original accident. This incident made Mao feel responsible for Harisugawa's well-being.