After the partY is Hitoshizuku-P and Yama's album released on December 15, 2012, with EndlessroLL, which was announced first, being released four days after. It consists of 9 tracks, several of which are remastered, and also includes two new songs "Re:fate" sung by GUMI and "Tengoku to Jigoku" by Kagamine Rin and Len. Notable songs from the album include "Bad End Night", "Ikasama Casino", and "Meisou Rhapsody".
This album features Rin, Len, GUMI, Gakupo, Miku, Luka, KAITO, MEIKO, MAYU, and Lily.
The album was released on VOC@LOID M@STER 23 on December 15, 2012 . A crossfade of the album can be found here.