相愛性理論 (Sou Ai Sei Ri Ron)

Background
"Sou Ai Sei Ri Ron" is an original song by DECO*27 featuring Hatsune Miku.

This song is featured in DECO*27's album, Sou Ai Sen Ri Ron, DECO*27 VOCALOID COLLECTION 2008~2012 and Sou Ai -so i-.

This song has entered the Hall of Fame and has exceeded over 100,000 views.