"Himawari iro D-i-s-k" is ArukaP's fifth album. The album cover was illustrated by RikuKanna. The album contains 12 original songs featuring Kagamine Len, Kagamine Rin, Camui Gackpo, Megurine Luka, Hatsune Miku, SF-A2 miki, and GUMI. It was originally released on July 8, 2012 at The Voc@loid M@ster 21. A crossfade for this album can be seen on Niconico. This album can be purchased here on Amazon and Toranoana.