ちょうちょ [Choucho] - Just be friends

I don't own the vocals in this video

This original song by Megurine Luka

Cover by ちょうちょ (Choucho)

Choucho is a singer who registered herself as a Nico Nico Douga video user

You can check out her profile at http://myanimelist.net/people/13997/ChouCho

or.....

Check out her official site http://iwill-music.co.jp/choucho/