BUNKA開放区 (BUNKA Kaihouku)

Background
The song was uploaded on December 27, 2011; in celebration of the Kagamines' Act 1 / Append anniversary. It is Wonderful Opportunity's second collaboration with Glider, the first being their notable hit song "Rimokon".

A month after, Jesus-P and Minus-P released the album Wan☆Pero!, with "BUNKA Kaihoku" being its opening track. The album was also licensed by KarenT, and the song is available in Amazon for 150 yen. A V3 Append remaster is also available on Wonderful Opportunity's "BEST" album KING & KNIGHT.

"BUNKA Kaihoku" tells the story of two detectives, Len and Rin, performing their daily tasks of being detectives.