"Senkou Xstasy" is a live tour held in April 1999 by Sheena Ringo. It is her first live tour following the release of the album "Muzai Moratorium." In addition to the unreleased songs "Identity" and "Gips" that had been performed numerous times already, "Tsumi to Batsu" was performed for the first time as a new song on this tour. The concert was partly broadcast on Space Shower TV 's special program, and only five of the songs were included in the limited edition blu-ray box set "LiVE," released in November 2013.