The fourth official single of the band released on May 13, 2015. Contains two songs: Starburst (that would be taken again in the Feeling of Unity album) and Struggle to Survive. The first press limited premium version of the single also contains a full DVD video of their first one-man show concert at Kobe World Kinen Hall on March 23, 2014. The music video of Starburst came out on June 30, 2015, more than one month after the release of the album.