His family is also a track and field athlete. His father Minoru was the Japanese national university champion in the 3000 metres steeplechase and the former Japanese national university record holder (9:12.2 minutes). His daughter Sena and Maya was the 2005 Japanese national junior high school champion in the 4 × 100 metres relay. His son Shotaro was the 2011 World Youth Championships silver medallist in the medley relay and the former Japanese national record holder (1:22.12 minutes) in the 4 × 200 metres relay.