Mai Tsuzuki, initially introduced as Misato Uehara, is a fan of Blast, and later Nana Osaki's manager. An ardent fan of Blast since its inception, Misato loves Nana and has befriended the band. However, "Uehara Misato" is not her true name. Misato/Mai claims that a fortune teller told her that if she used the name "Uehara Misato" she could become closer to Nana, but may have actually chosen it because it's the name of Nana's half-sister.

(Source: Wikia)