Uruma is from Okinawa Prefecture; her name comes from Nago, Okinawa, and Uruma, Okinawa. She is the youngest child from a large, poor family. Due to a simplistic life with little to no luxuries, she was able to focus mainly on her school work and gets good grades because of it. She likes to refer to Tsukasa as "Onii-chan", meaning "older brother".