Ushiro Keisuke
He has been involved i​n decathlon from university and won the Japan Championship for the first time in 2010 when he was in the 4th grade. The following year, in 2011, he set a record for the Japanese track and field world to break the Japanese record for the first time in 18 years. And he p​articipated ​in his first world track and field. In 2012, he participated in the London Olympic Games for the first time in 48 years as a Japanese player, and in 2014 he set a new record in Japan.