16 Life

16 Life (also known as シックスティーンライフ or Sixteen Life) is a two-volume manga series by Aikawa Saki. It was published from December 5, 2009 to May 20, 2010 and was serialized by Sho-Comi.

Plot
Saya is an ordinary lethargic female high school student. At karaoke while she was singing enthusiastically a song of her favorite artist, Takase Kazuki, the person himself was watching her…!?

Other Sources

 * MyAnimeList