Gymnast who won a silver medal in the team event at the 2012 Summer Olympics in London.
He began training at an early age, before making his Olympic debut as an 18-year old.
He won a gold medal at 2013 Summer Universiade, in the floor routine.
His father is Hiroyuki Kato, a coach on Japan's national gymnastics team.
At the 2012 Olympics he competed against many superb gymnasts, including Danell Leyva.