A Japanese swimmer whose specialty is the breaststroke. Amongst many other medals, he won the Gold in the 100-m and 200-m breaststroke at the 2004 Athens Olympics. He won them again at the 2008 Beijing Olympics.

He is one of several athletes involved in the "[[aquarius_(drink)|Aquarius]] Heroes" advertising campaign. His "Aquarius Hero" persona is "Frogman Kosuke". 

References/Resources
* http://en.wikipedia.org/wiki/Kosuke_Kitajima
kitajima kosuke