Boku no Koto Oshite yo

Nagisa is a third-year middle school girl whose life revolves around the super popular idol Wataya Reina. When her hair gets cut short during spring break, she is mistaken for a member of the boy group Dai-Ly... What's more, even though she's a girl, she ends up filling in as a substitute for a missing member...?! The fan takes the stage! The exciting story of a substitute idol!! (Source: Shueisha, translated) *Note: Includes six extra chapters.*