Nijika Ijichi's older sister. Due to their mother's passing and their father's business travels, Seika and Nijika were always together growing up. She is the manager of the live house STARRY. Described by Nijika as a for her, seemingly cold, tough love approach when it comes to both kessoku band and her sister. Even though it is shown that she cares for both deep down. She was previously in a band but quit. She states this was due to disinterest but Nijika stipulates that she started STARRY for her as Seika used to bring her sister along to concerts when she was younger.
