"ワン☆オポ！VOL.06" (Wan☆Opo! Vol.6) is Wonderful☆Opportunity's ninth album (their sixth album of the WanOpo series), the previous being KING & KNIGHT; featuring Kagamine Rin and Kagamine Len. This album was released on VOC@LOID M@STER 23 on December 15. It consists of 13 tracks, including "Shinde Shimau to wa Nasakenai!", which was previously featured in an EXIT TUNES compilation, and "Rimokon Cyberpunk mix", which was previously limited to download in celebration of the song being featured in the game Project diva f.