Sanrio is pulling out all of the stops to promote the upcoming Japanese home video release of Show by Rock!!, their first late-night broadcast TV anime. Purchases of the first 3 volumes of the home video release will grant customers the opportunity to enter a lottery style drawing in order to attend a trio of mini-live events featuring the bands from the show.
Purchase of 1st volume (on sale June 24, 2015) will include the chance to win a ticket to attend a Shingan Crimsonz themed mini-live event on September 06, 2015, featuring Kishō Taniyama, the voice of Crow.
Purchase of the 2nd volume (on sale July 22. 2015 ) will include the chance to win a ticket to attend a Trichronika themed mini-live event on September 19, 2015, featuring Mamoru Miyano, Ayumu Murase, and Ryota Ohsaka, the voices of Shu Zo, Riku, and Kai, respectively.
Purchase of the 3rd volume (on sale August 26, 2015) will include the chance to win a ticket to attend a Plasmagica themed mini-live event on November 11, 2015, featuring Eri Inagawa, Sumire Uesaka, Manami Numakura, and Ayane Sakura, the voices of Cyan, ChuChu, Retoree, and Moa, respectively.
Source: Crunchyroll – “Show by Rock!!” Promotes Home Video Release with Mini-Live Events