Mafuyu Asahina is a main character in Project Sekai Colorful Stage! feat. Hatsune Miku, and a member of the unit '25-ji, Nightcord de.' She is known for her calm, reserved demeanor and struggles with emotional expression, facing high academic expectations from her family. Within the story, Mafuyu grapples with her sense of identity and pressure to be perfect, which makes her arc one of the most poignant in the series. She serves as a central figure whose internal conflicts drive much of the group's emotional narrative.