Nijika Ijichi is a second-year student at Shimokitazawa High School and serves as the drummer, leader, and emotional anchor of Kessoku Band. She was born on May 29 and has a cheerful, energetic, and caring personality. While outgoing and friendly, she is not as extremely extroverted as her bandmate Ikuyo Kita, but she possesses a natural warmth that puts others at ease. Nijika is kind, altruistic, and accommodating, often taking on the roles of organizer and accountant for the band in addition to playing drums. Her central motivation stems from a deeply personal family history. When she was young, her mother passed away unexpectedly, leaving Nijika withdrawn and unable to attend school. Her older sister Seika, who is twelve years older, returned home and helped Nijika by fixing her hair—a gesture that reminded her of their mother—and took her to see a live performance. This experience sparked Nijika's passion for music, leading her to learn drums. Later, Seika retired from her own band and opened the live house STARRY in Shimokitazawa to support Nijika's musical ambitions. In turn, Nijika's primary dream is to make STARRY a huge success, honoring her sister's sacrifice. Nijika plays a pivotal role in the story as the person who discovers Hitori Gotoh—an extremely shy guitarist—playing alone in a park and invites her to join the band. She also had a previous friendship with bassist Ryo Yamada, whom she recruited after Ryo left her former group. Nijika's relationship with Kita is marked by shared extroversion and a teasing dynamic, especially toward Hitori. She is deeply empathetic and intuitive, often checking on Hitori's well-being and encouraging her to grow. As the series progresses, Nijika confides her dream to Hitori, showing vulnerability and trust. Her development centers on balancing her own ambition with nurturing her bandmates, embodying both a driving force and a supportive foundation. As a drummer, she maintains a steady rhythm that anchors the band's performances, and her leadership ensures the group stays unified despite their contrasting personalities. Overall, Nijika is defined by her unwavering dedication to her family, her friends, and the band she built, all while carrying a quiet resilience born from personal loss.