Iizuka pursued higher education in Law at Chuo University in Tokyo, Japan. Balancing academics and sports, he managed to excel in both fields. His fluency in English and Japanese has also been an asset throughout his career.

Club and Coaching

Iizuka represents the Mizuno club in Japan. His personal coach, Yasuhiro Toyoda, has played a crucial role in shaping his athletic prowess. Under Toyoda's guidance, Iizuka has honed his skills and achieved remarkable success.

International Debut

Iizuka made his international debut in 2011, competing for Japan. Since then, he has been a prominent figure in the athletics scene, earning the nickname "Japanese Bolt" for his speed and agility.

Injuries and Challenges

Throughout his career, Iizuka faced several injuries. In March 2018, he injured his right iliopsoas muscle while training in the USA. Earlier, he injured his right thigh during the 200m final at the 2015 Japan Championships in Niigata. This injury forced him to withdraw from the 2015 World Championships in Beijing.

Awards and Honours

Iizuka's achievements have been recognised with numerous awards. In 2012 and 2017, he received the Outstanding Achievement Award at the Japan Association of Athletics Federations Athletic Awards. He also received Sports Awards at the Kozuki Sports Awards in 2010 and 2017.

In 2012, Iizuka was honoured with the Governor's Special Citation Award in Shizuoka Prefecture. Additionally, he received the Rookie of the Year award at the 2010 Japanese Olympic Committee Sports Awards.

Hobbies and Personal Interests

Outside of athletics, Iizuka enjoys making videos and playing video games. These hobbies provide him with a creative outlet and a way to relax during his downtime.

As of July 2024, Iizuka continues to train and compete at a high level. His dedication to athletics remains unwavering as he aims for future successes on the international stage.