Junya Koga
Junya Koga is a Japanese backstroke swimmer. He is a Waseda University student in Tokyo.
In May 2009, he set the Japanese records in the 50 m and 100 m backstrokes at the 2009 Japan Championships, qualifying for Japan's team to the 2009 World Championships.
Personal bests
In long course- 50m backstroke 24.24 Asian record
- 100m backstroke 52.26