Futagawa was born in Kagoshima Prefecture on June 27, 1980. He joined J1 League club Gamba Osaka from their youth team in 1999. He debuted in 1999 season and played many matches as offensive midfielder from 2000 season. He played as central player for the club for a long time. In 2003, he was given number "10" shirt and Gamba was at the 3rd place in J1 League. In 2005, Gamba won the champions in J1 League first time in the club history. In 2008, Gamba won the champions in AFC Champions League for 2 years in a row as Japanese club (Urawa Reds won in 2007). Gamba also won the 2008 Emperor's Cup. In 2009, Gamba won the Emperor's Cup for 2 years in a row. This is the golden era in the club history and he was one of the central player under manager Akira Nishino (2002–2011). However manager Nishino left Gamba end of 2011 season and the club performance deteriorated soon. In 2012, Gamba finished at the 17th place of 18 clubs and was relegated to J2 League. Futagawa remained in Gamba and Gamba won the champions in 2013 season. In 2014 season, Gamba returned to J1 and won all three major title in Japan, J1 League, J.League Cup and Emperor's Cup. However his opportunity to play decreased in 2014 and he could hardly play in the match from 2015.