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Supercell continued to gain members—including the illustrators Shirow Miwa, Redjuice, and Huke—and released three more songs online in 2008: "Koi wa Sensō" on February 22, "World is Mine" on May 31, and "Black Rock Shooter" on June 13. Ryo continued to be the sole member involved in musical composition and the writing of lyrics, while the other members provided illustrations, animation, design, and photography in album booklets, cases, and music videos. At Comiket 74 on August 16, 2008, Supercell released a "dōjin" (independent) version of "Supercell" containing the three songs released earlier that year, in addition to seven previously unreleased songs; "Melt" was not included on the indie release. The album also came with a DVD containing music videos for three of the songs. On December 12, 2008, Supercell released "Hajimete no Koi ga Owaru Toki" on Nico Nico Douga, and was the last song Supercell posted on the website.