Shiromaru, Yui
Summary
Yui Shiromaru, born on April 6, serves as the senpai to both Nakami and Isaki. As the final member of the astronomy club before it was dissolved, she is also a winner of a national high school astrophotography competition. In addition to her academic achievements, she owns and operates an arcade named "Betty," residing in a modest unit adjacent to the establishment. Her family includes a cousin named Kai.
