Ririko works as a waitress at Johnny's bar aboard the Hagoromo airship, regularly serving patrons including the Kotobuki Squadron and other crew members. During routine service, she displays a consistently disinterested and cold demeanor toward customers and her employer. Despite this detached attitude toward her duties, she reveals underlying capability and composure when facing crisis situations.

Beyond her role at the bar, Ririko demonstrates notable combat proficiency, exhibiting effectiveness in hand-to-hand confrontations during critical incidents aboard the airship. This skill contrasts with her stated identity as a waitress. Her interactions remain primarily situational, focused on her bar responsibilities and reactions to emergencies.