니시모토, 켄타

2013: First career final

In 2013, Nishimoto reached the final of the Russia Open Grand Prix tournament, and became the runner-up after being defeated by Vladimir Ivanov of Russia.

2017: Summer Universiade silver

In August, Nishimoto participated in the 2017 Summer Universiade, held in Taipei. He lost to Wang Tzu-wei in the final, 16–21, 15–21, clinching a silver medal.

2018: Asian Games bronze; 2 World Tour finals

In January, Nishimoto reached his first BWF World Tour final, the 2018 Malaysia Masters. In the final, he lost to then-reigning world champion Viktor Axelsen in the final, 13–21, 23–21, 18–21 in three games.

Later in August, Nishimoto participated in the 2018 Asian Games, held in Jakarta. He lost to home favourite and eventual champion Jonatan Christie in the semi-final, losing 15–21, 21–15, 19–21 in three games, winning a bronze medal.

At the end of the year, Nishimoto made it to another final, the 2018 Hong Kong Open. He lost to Korea's Son Wan-ho in the final, losing 21–14, 17–21, 13–21 in an hour and 29 minutes.

2019–2020

Kicking off the 2019 season, in March, Nishimoto made it to his first final of the year, the 2019 German Open. He lost in the final to compatriot Kento Momota in straight games, losing 10–21, 16–21.

The following year, at the 2020 Thailand Masters, Nishimoto lost to Hong Kong's Ng Ka Long in the final, losing 21–16, 13–21, 12–21 in three games.

2022: First international title

In September, Nishimoto made it to his 7th career final, this time at his home event, the 2022 Japan Open. In the final, he beat 6th ranked and 3rd seed Chou Tien-chen in the final, winning 21–19, 21–23, 21–17 in rubber games. After the final, Nishimoto stated that he was "really happy" and also "a bit relieved" after clinching his first title, and thanked the home crowd for their support.