[1][2] Tanigawa won a silver medal on the vault at the 2015 Osijek World Challenge Cup behind Ukraine's Igor Radivilov.

[4] Tanigawa won a bronze medal on the vault at the Melbourne World Cup behind Kenzō Shirai and Christopher Remkes.

[5] There, he also placed fourth on the floor exercise, losing the execution score tiebreaker for the bronze medal to Ferhat Arıcan.

[10] He competed at the Swiss Cup, a mixed pairs event, alongside Hitomi Hatakeda, and they won the silver medal behind Switzerland.

[12] Tanigawa won a silver medal in the all-around at the Tokyo World Cup behind teammate Kenzō Shirai.

[16] Tanigawa was selected to compete at the 2018 World Championships alongside Kazuma Kaya, Kenzō Shirai, Yūsuke Tanaka, and Kōhei Uchimura, with his brother Kakeru being the team alternate.

[17] The team won the bronze medal behind China and Russia after multiple falls including from Tanigawa on the floor exercise.

[20] At the 2019 Tokyo World Cup, Tanigawa won a silver medal in the all-around behind American Sam Mikulak.

[29] Then in December, he competed at the All-Japan Championships and tied for the all-around bronze medal with his brother Kakeru.

[32] At the 2020 Summer Olympics, held in 2021 in Tokyo, he competed for Japan, on a team including Hashimoto, Kazuma Kaya, and Takeru Kitazono.

[44] Tanigawa finished fourth in the all-around at the All-Japan Championships,[45] and he placed seventh at the NHK Trophy.

[50] Tanigawa was selected to represent Japan at the 2024 Summer Olympics in Paris, France, alongside Takaaki Sugino, Shinnosuke Oka, Kazuma Kaya, and Daiki Hashimoto.