蜜と唾 (Tsumi to Batsu) is Dir En Grey's first live-limited release. It's also one of two releases that were primarily released on digital platforms, the other being 落ちた事のある空 (2020). Unlike that one, however, this release isn't considered part of Dir En Grey's single discography.
The physical version of this release was only sold at certain concerts in 2011 and 2012. The version with the red cover was sold on September 13 at CLUB CITTA' and on November 11, 2011, at TOKYO DOME CITY HALL. The version with the black cover was only sold on January 22, 2012, at Ōsaka-jō Hall.