Yama-chan, also known as Nao-kun, is a dedicated athlete and office worker from Japan. He represents Shikoku Gas in his sporting endeavours. Coached by Yumiko Taniguchi at the national level, he made his debut for Japan in 2019 in Melbourne, Australia.

| Season | Event | Rank |
|---|---|---|
| 2020 | 100m Breaststroke - SB14 | G Gold |
| 2020 | 100m Butterfly - S14 | 4 |
| 2020 | 4x100m Freestyle Relay - S14 | 4 |
| 2020 | 200m Individual Medley - SM14 | 11 |
In 2019, Yama-chan had the honour of being the flag bearer for Japan at the opening ceremony of the World Championships in London, England. His achievements continued in 2020 when he received the Ehime Broadcasting Award and an Excellence Award at the Japan Para Sports Awards.
Yama-chan cites British swimmer Adam Peaty as his hero. His grandfather has been a significant influence on his life and career choices.
Looking ahead, Yama-chan aims to win a medal at the 2024 Paralympic Games in Paris. This goal reflects his dedication and commitment to excelling in his sport.
Yama-chan's journey from a young swimmer to a national athlete showcases his determination and passion for swimming. With continued support from his coach and inspiration from his heroes, he is set to achieve great heights in his career.
Yama-chan, also known as Nao-kun, is a dedicated athlete and office worker from Japan. He represents Shikoku Gas in his sporting endeavours. Coached by Yumiko Taniguchi at the national level, he made his debut for Japan in 2019 in Melbourne, Australia.