From 2009, 2010 Kunimoto competed in
Japanese Formula 3 Championship with
TOM'S where he clinched third place, and as a champion the next year.
Super GT Kunimoto made his debut in the series' GT300 Class with apr on 2009 with
Takuto Iguchi. the next 2 seasons he paired with
Morio Nitta. The latter pair clinch 1 win and 4 podium during 2 season in 2010 & 2011. Kunimoto then step up to GT500 with Kraft in 2012 with
Andrea Caldarelli new to the series, as the pair clinch 1 podium in the season. Kunimoto then moves to
Team LeMans partnering
Kazuya Oshima for three seasons. Both pair only won once from 2013, and five podiums. For 2016, Kunimoto moves to
WedsSport Bandoh alongside
Yuhi Sekiguchi. He won only once on that season. After that he is the main driver for Bandoh for four seasons, with
Kenta Yamashita,
Sho Tsuboi,
Ritomo Miyata, and
Sena Sakaguchi as his teammate. Kunimoto wins again with Sakaguchi in 2-23 at Suzuka Circuit. For 2024, he stays with the same team and teammate. Kunimoto then won the series title in 2016 with his maiden two wins and four podiums, as he beats
Andre Lotterer by three points. After that he did not win another title, and race till now. After eight seasons with Cerumo INGING, he moves to
Kondo Racing in 2019, then
KCMG. ==Racing record==