Busuko is a fictional character from the Ukagaka (伺か) software environment, also known as Nanika. She is often depicted as a small, humorous, and sometimes mischievous desktop mascot. Busuko serves as one of the original 'ghosts' or mascots, engaging users with quirky dialogue and actions. Her role is to interact with users, provide entertainment, and sometimes offer information or utilities, making her a beloved figure among Ukagaka enthusiasts. Busuko’s personality is often cheerful and a little eccentric.