恋愛フィロソフィア (Ren'ai Philosophia)

Background
This song was uploaded onto Nico Nico Douga on May 28, 2012. It has reached over 1,000,000 views to date and has entered the Hall of Legend. Besides Hatsune Miku, the PV also features Kagamine Rin/Len, Megurine Luka, MEIKO and KAITO.

This song is included in Kurousa-P's compilation album, 5th ANNIVERSARY BEST.