Supporting characters in the story help to further along the plot of the five heroines. They include Akiko Minase, Nayuki's mother and Yuichi's aunt, who is very easy going and will approve of things in one second. Sayuri Kurata is Mai's supporting character, and only friend other than Yuichi. She always tries to put on a smile to hide a depressing past. Kaori Misaka is another, who is Shiori's sister, though she does not admit this to be true when confronted about it. The last supporting character is Mishio Amano who has a major involvement in Makoto's story. She has a cold personality, and helps Yuichi to uncover Makoto's true identity.