Seika Ijichi is a character from the anime series 'Bocchi the Rock!'. She is the older sister of Nijika Ijichi and the owner of STARRY, a live house where the band Kessoku Band frequently performs. Seika is a responsible and supportive figure, often helping the band members with their performances and providing them with guidance. Despite her sometimes strict demeanor, Seika genuinely cares for Nijika and her friends, playing a crucial role in their journey as musicians and offering a space for them to grow and develop their musical talents.