Yui Shiromaru

Yui Shiromaru is a graduate of Kuyo High School, where she served as president of the Astronomy Club and claimed first place in a national astrophotography competition. After graduation, she settled in a small town and runs an arcade called "Betty." As a seasoned senior, she passes on her expertise in night-sky photography to Maruta Nakami and Isaki Magari. Though she has a laid-back nature and tends to be shy around new people, she is deeply caring toward those she mentors, making her a vital supporting figure who guides the protagonists' growth throughout the story.