Bashsenseis assistant whom Shuri meets in Okinawa. She is bold and tomboyish but likes to be relied upon and treats Shuri like a younger brother. She is a childhood friend of Nakijin and also capable in karate. Yna is engaged to the President of Okinawa Asato who is also her surrogate father. Ynas name comes from the Okinawan name of Hibiscus tiliaceus a tropical plant. source:Wikipedia