Ai Matsumoto is the first Japanese woman judoka to win Olympic gold in 57 kg category . `` I used to wonder what it would be like if every single person in the world smiles at once . '' She was the only member of Japan 's judo team to win a gold at London 2012 . One of her coaches described her as being ` ` like Peter Pan , with a heart of a young boy '' Matsumoto is known for fighting with her ` ` wild '' spirit rather than technique .
Ai Matsumoto is the first Japanese woman judoka to win Olympic gold in 57 kg category . She was the only member of Japan 's judo team to win a gold at London 2012 . One of her coaches described her as being ` ` like Peter Pan , with a heart of a young boy '' Matsumoto is known for fighting with her ` ` wild '' spirit rather than technique .