2012 would prove to be his best season in the class, with two wins at the Twin Ring Motegi and the Suzuka International Racing Course, as well as four other podium finishes.

In 2014, Takaboshi competed in the Japanese Formula 3 premier class, driving for the B-MAX Racing Team with NDDP.

In 2015, Takaboshi won the Japanese Formula 3 season opener in Suzuka, adding two more wins later in the year at the Okayama International Circuit.

Although he missed half the races, he finished fourth overall with 42 points behind Kenta Yamashita, Jann Mardenborough and Sho Tsuboi.

In 2017, Takaboshi returned as a full-time driver in Japanese Formula 3 with the B-MAX Racing Team with NDDP.

[3] Takaboshi made his debut in 2015 competed in the GT300 class of the Super GT at NDDP Racing, sharing a Nissan GT-R GT3 with Kazuki Hoshino.

Within the Super GT, he also made his GT500 debut in the race at Suzuka with the MOLA team, sharing a Nissan GT-R with Satoshi Motoyama as a one-time replacement for Katsumasa Chiyo.

[citation needed] For 2017, he also returned to Super GT with NDDP Racing and again shared a Nissan GT-R GT3 with Kazuki Hoshino for 2017.

[citation needed] In 2018, Takaboshi only competed in the Super GT, in which he made a permanent switch to the GT500 class to share a Nissan GT-R with João Paulo de Oliveira with the Kondo Racing team.