Miina is a 19-year-old world-famous singer based primarily in Germany, embarking on her first world tour. Her lineage traces back to the twin sister of Mikka, an alien from the planet Musica sent to Earth roughly 40,000 years ago. This heritage manifests in Miina's singing style, which bears a recognizable similarity to traditional Musican lullabies – a connection noted by Suneo that becomes crucial to the unfolding events. The ancestral link is further evidenced by Miina's possession of the Museaca's flute, a cherished family heirloom passed down through generations and given to her by her grandmother, which she treats as a personal charm. When Mikka and Nobita's group approach her, seeking the flute to save Earth from the Noise entity, Miina willingly lends the artifact without hesitation as a gesture to a fan. Her cooperation directly enables the activation of the Grand Hall of Farre and the subsequent battle against the Noise.