Mizuki Akiyama is a prominent character in the rhythm game and multimedia project Project Sekai: Colorful Stage! feat. Hatsune Miku. They are a talented, enigmatic member of the group 25-ji, Nightcord de., often standing out for their creative skills and unique fashion sense. Mizuki’s background and gender identity are explored subtly in the series, adding depth to their personality. Their role in the story involves supporting fellow group members while grappling with their own personal struggles and quest for self-acceptance.