Mitsuba is a young girl with light blonde hair that fades into pink tones and two-toned eyes, featuring an upper orangish pink and a lower light blue. She participates in the death games as a veteran player, having reached her thirtieth game at the time of the Cloudy Beach scenario. Reaching the Wall of Thirty marks a significant milestone that distinguishes true veterans from less experienced participants. Mitsuba is mentored by a character named Mishiro, who takes on protégés with a similar disposition. Her appearance in Cloudy Beach places her among a group of eight players on a remote island, where the game involves a murder mystery element. Her prior experience and the mentorship she received likely inform her approach to the deadly challenges, though specific personality traits, motivations, or abilities are not detailed in the available information.