Hiromi Masuoka

A classmate of Koyuki, Saku, and Chiba at Ichieda Gakuen Private High School, this hardworking student shares a close bond with both Koyuki and Saku. Beyond her academic life, she previously gained work experience at a nearby doughnut shop located right next to the Seiryuu restaurant. Her connection to the main cast through both school and her former part-time job makes her a familiar face within the local community.