A one-shot and prequel to Onee-chan ga Mamotte Ageru. In it, Nanami Kousaka goes to an idol audition, and he ultimately makes his debut cross-dressing as Mi-Na, who is seen near the end of Onee-chan ga Mamotte Ageru chapter 1 a little bit older.Sequel:> Oneechan ga Mamotte Ageru!(http://manga1s.com/search?q=oneechan-ga-mamotte-ageru)
