Sid went on hiatus in 2016, while vocalist Mao and bassist Aki focused on their solo careers.[1] They returned in 2017, releasing the single "Glass no Hitomi" on January 18. The next single was "Butterfly Effect", on May 10, followed by two performances at Nippon Budokan.[2] On August 2, the album's last single, "Rasen no Yume", was released.[3]
Nomad was released on September 6, being the band's first album in three and a half years, following Outsider. Three editions were available: a regular edition with only the CD with 10 tracks, the limited edition A containing a DVD interview where the members talk about the album and the limited edition B coming with a 32-page photo booklet.[4]Tower Records, Tsutaya and HMV stores provided an exclusive poster as a gift to Nomad buyers. There was also a meet and greet event in Tokyo on the 9th and Osaka on the 10th for those who purchased the album in first pressings, which accompanied a ticket to the event.[5]
The Sid Tour 2017 Nomad started in Matsudo and continued with 15 more Japanese cities.[3] An instrumental intro called "Prologue of Nomad" was performed during the tour and was eventually made available on streaming services on November 1.[6] The show at the Tokyo International Forum was recorded and released as a live album, with the same name as the tour, on July 25, 2018.[7]
Critical reception
Allmusic mentioned Nomad as "a real return to form" and the band's strongest album in years.[1] CD Journal said that the members strived to improve the sound quality in this album, having already "a pop sense and high skills for a long time".[8]