Keijun Seiki is a personification of a light cruiser warship from the game and anime series Kantai Collection, also known as KanColle. In the series, ship girls (Kanmusu) are anthropomorphized versions of historic Japanese naval vessels, and Keijun Seiki represents the light cruiser Yubari. She is depicted as energetic, optimistic, and innovative, often portrayed as a shipgirl who loves experimenting with equipment. Her role in the series is to support the fleet with her balanced stats and inventive spirit.