アドレサンス﻿ (Adolescence)

Background
"Adolescence" was first uploaded on December 26, 2008, in celebration of the Kagamines' first anniversary. It is a cover of Signal-P's hit, "Cendrillon", with different lyrics. Though Signal-P himself said that it is a cover (technically written as, "Cendrillon Kagamine ver."), it's still considered as a "Rin Original song" and "Len Original song", as tagged by Signal-P in the original video in niconico.

It's featured in Signal-P's Exit Tunes compilation, "The best of Dios/Signal-P" as one of the tracks along with the original Cendrillon, as well as Signal-P's album "CYBER COMPLETE ～Nonstop SigMix～". It is relatively popular with over half a million views in NND, inviting various derivatives may it be PVs or fanarts.

In a matter of plot, Orange, the lyricist to the song, said that the theme is "at the age of 14, the twins hitting puberty". With only that to grasp, both Orange and Signal-P said that the song could be interpreted in any way; may it be lead to a rather famous interpretation on the twins being romantically interested with each other, or the refusal of having to grow up.

Publications
Hiro Tamura also published a doujinshi called Perdu that shows the story and background behind this song first released on VOC@M@S 8.