Omoide wa Okkusenman!
History. The first posting of "Omoide wa Okkusenman!" with vocals by an individual known as Gom occurred on YouTube on February 19, 2007. The earliest postings of the song on Nico Nico Douga were on March 6, 2007, and sung by an individual (or group) known as "CHROMES", followed by Gomu's minutes later. While the original videos feature scenes taken from the "Rockman 2" video game, an original flash animation of the song was made by an individual known as was uploaded on May 27, 2007, to Nico Nico Douga. The song has since become an  Internet meme in Japan and the rest of the world. Its entrenching in the Nico Nico Douga culture has given it a permanent placement Kumikyoku Nico Nico Douga medleys, alongside the similar song "Air Man ga Taosenai". The original writer of the song's lyrics is unknown. When Nico Nico Douga attempted to discover the song's proper writer to include the song in one of their CDs, their campaign was unsuccessful and determined that it was written as a collaboration of users in the Nico Nico Douga and Japanese internet communities. Commercial releases. The popularity of "Okkusenman!" in Japan  led to various covers on Nico Nico Douga and YouTube as well as commercial releases. Gomu's version was included as a track on the album released July 9, 2008. At the 2008 "Animelo Summer Live" concert, Hironobu Kageyama, Masaaki Endoh, Hiroshi Kitadani, Yoshiki Fukuyama, and Aki Misato performed a cover version of "Okkusenman!" to begin the second day's setlist. In 2009, JAM Project contributed a cover version of "Okkusenman!" to the album as its bonus track.