King of Idol

King of Idol (キング・オブ・アイドル) is a manga series by Tamiki Wakaki. It is serialized in Shounen Sunday.

Plot
Mahoro Harukana moves to Tokio to achieve the dream of becoming an Idol. In order to do this, Mahoro will assist to the National Entretainment and Music School in Kamisaka. Everything goes surprisingly well, being great at singing and dancing, and even her teammates are astonished by her talent.

The only problem is that... Mahoro is actually a boy, and a boy who wants to become The King of the Idols!

Official

 * Manga official website