Ayumi Otosaka

As a bright middle-school student and the devoted younger sister of Yuu Otosaka, this young girl finds joy in stargazing and celestial wonders. Beyond her love for the night sky, she is an enthusiastic superfan of the famous idol Yusa Nishimori, often channeling her passion into her admiration for her favorite star. Her bubbly personality and deep bond with her brother serve as a heartwarming element within the story's emotional journey.