Sayori is intended to play off the visual novel trope of the childhood friend who becomes a romantic interest. She is portrayed as being rather talkative, as she often goes on tangents. She cares deeply about the well-being and happiness of others, especially the player, and appears to be enthusiastic about everything. However, she makes it clear that this is a pretense due to her depression, and that it hurts her when people worry about her. Thus, she tries to keep everyone as happy as possible to make sure nobody needs to worry about her.
