In 2003, a nonprofit organizationAssociation of Setting Up a J. League Team in Morioka(Jリーグチームを盛岡に作る会,J Rīgu chīmu wo Morioka ni tsukuru kai?) was founded, and the team was reorganized and changed their name to Grulla Morioka in February 2004 with the intention of achieving elevation to the J. League by 2008.
Under the new organization, former JEF United and Oita Trinita player Shinichi Muto was invited to coach and captain the team with the company of players from the defunct Villanova Morioka and from J2 league. They played their first match on May 9, 2004, and it could be seen as an introduction to the local press beforehand. They won the second division Tohoku League in 2004 and moved to the first division in 2005. In the same year, they won their first league championship, which was shared with TDK S.C.Toru Yoshida has been coaching the team since 2006.