In 2021, Nojiri stepped up to the main level championship in Japanese F3; he finished fifth in the standings, and won the tenth round at Okayama International Circuit.

In the sixth and penultimate round of the championship at Sportsland Sugo, Nojiri scored his first career victory in just his seventh race.

He finished a career-best fourth in the championship, while also ending a five-year winless drought at the season-ending JAF Grand Prix in Suzuka.

[4] Nojiri's form carried into 2022; he opened the season with a win and second place finish at the doubleheader weekend at Fuji, along with a pole position in round two.

At the JAF Grand Prix Suzuka, Nojiri won the pole for the first race, and clinched his second consecutive championship with a second place finish.

Nojiri became the first driver since Tsugio Matsuda to win consecutive championships in Japanese top formula racing.

[5] Nojiri's first Super GT start came in the GT300 class, driving Autobacs Racing Team Aguri (ARTA)'s Honda CR-Z GT300 at the 2013 Suzuka 1000km.

He stepped up to full-time Super GT competition in 2014 with Team Mugen, taking over for reigning GT300 champion Hideki Mutoh.

Nojiri was joined by Toshiki Oyu for the 2023 season after Fukuzumi was moved to ARTA's new sister entry to partner Hiroki Otsu.

Nojiri and Oyu would go on to finish eighth in the championship after inconsistent qualifying form throughout the season, taking a dominant victory at Sportsland Sugo.