|Novel Debut||Past: Chapter 5|
Shiraishi is a fashionable and cheerful young woman, always in full makeup.
Shiraishi is introduced chatting with Kimi Nishino and Itose about their weekend plans. She attempts to get them to join her on a group blind date, and pesters them in an effort to convince them. Itose rejects her due to having made plans with her family, while Kimi chooses to focus on her school work.
After the death of Kimi's family, Shiraishi made awkward attempts at offering her comfort. However, the women began to drift apart after Kimi began seeing Nishiki Nishio. Some time later, Kimi overheard Itose and Shiraishi gossiping about her. Unaware that she was listening, the two women cruelly mocked her as a selfish and boring person. Shiraishi revealed that she had intended to match Itose and Nishiki on the group date, and felt she would be a much better match than someone like Kimi.