Umiri has shoulder-length black hair, along with a straight-cut fringe that goes slightly to the left. She has angular, turquoise eyes, she stands tall at 158 cm. Despite her stoic, punk-like appearance, Umiri generally speaks in a polite manner and is a very straightforward and easygoing girl. Umiri is the bassist of Ave Mujica and also an exceptionally proficient bassist who plays as a support artist for 30 different bands. Umiri is classmates with Taki and Uika, Umiri enjoys teasing Taki.