Seika has long blonde hair with floating triangular folds and orange eyes. She usually wears a black shirt with a wide neckline, revealing red straps, as well as a tight black choker around her neck. There is a younger sister, Nijika Ijichi. Her height is 166, and her age is from 29 years old. Manager and owner of the STARRY Concert House. She also sleeps with her stuffed animals, despite her age.