Project Diva 2nd - Kagamine Rin 「Kokoro」 

Reprinted from Nico Nico Douga
www.nicovideo.j...
Original Title: 【初音ミク】収録決定！鏡音リン「ココロ」を少しだけ【Project DIVA 2nd】
A recently released promotional video for SEGA's Hatsune Miku Project Diva 2nd, to be released July 29th.
The song is Kokoro by ToraborutaP, with vocals by VOCALOID Kagamine Rin.
Original song:
www.nicovideo.j...
This video is not mine, all credit goes to SEGA, Crypton, and ToraborutaP.