Mitsuru Horikawa

Mitsuru Horikawa is a high school sophomore who works part-time at 'Midorima​tsu', a Japanese confectionery shop, while also serving as the eldest sister to four younger brothers at home. Balancing schoolwork, her part-time job, and the responsibility of caring for her siblings, she demonstrates a remarkably strong sense of duty. Music is her private passion — she anonymously shares her singing and playing online, always wearing a mask to conceal her identity. With the encouragement and support of Kazuna Nono, she finds the courage to open up to her family about her dream of pursuing music, and through their time together, she gradually develops deeper feelings for him.