白黒病棟 (Shirokuro Byoutou)

Background
The song was uploaded on May 30, 2008. It is Yugami-P's second song and his first song using only the Kagamines. It has more than 259,000 views on Nico Nico Douga and has became one of the Kagamine's most well known songs.

In the song, Len sings about his and Rin's bodies being exchanged. The are also in a hospital ward(hence the title "Monochrome Ward"). After the exchange, Rin tells Len that even though they have switched bodies, Len will always be a nobody.