Hideki started his ITU para-triathlon career on a high with his first gold medal at the 2013 Subic Bay ASTC Paratriathlon Asian Championships and again in the same race in 2015. Since then, Hideki has had a number of podium finishes.

Career Highlights:
- 3rd place at the 2019 Banyoles ITU Paratriathlon World Cup
- 2nd place at the 2019 Gyeongju ASTC Triathlon Asian Championships
- 2nd place at the 2018 Lausanne ITU Paratriathlon World Cup
- 4th place at the 2017 ITU World Triathlon Grand Final Rotterdam
- 2nd place at the 2017 Edmonton ITU World Paratriathlon Series
- 4th place at the 2017 Iseo - Franciacorta ITU Paratriathlon World Cup
- 4th place at the 2017 Altafulla ITU Paratriathlon World Cup
- 6th place at the 2017 Yokohama ITU World Paratriathlon Series