13943号室 (13943 Goushitsu)

Background
Natsu-P's 34th VOCALOID work as well as 8th work with VanaN'Ice (Len, Gackpo, and KAITO). The song features Kiyoteru as well.

The premise of the song takes place in a jail cell, with Kiyoteru being the cell guard. The lyrics are rather vague, but it can be interpreted that the members of Vanan'Ice were originally friends with Kiyoteru but were locked in jail after lying, cheating, and murdering. It can also be suggested that the four of them are then at odds with each other, none of the men truly trusting each other. Throughout the song, heavy breathing and distorted voices play in the background, the intensity and volume of both increasing as the song goes on. In addition, the PV itself has clouds of blood throughout the song, with images of bloodied walls and doors showing briefly at the beginning.

After publishing this work, SCL project announced that LAST COLOR would be their first and last major album, with this song being one of the last made by the circle.

This song has entered the Hall of Fame.