Career
He lost a 6-round decision in only his 6th professional fight, but steadily compiled wins to challenge Jesse Maca for the OPBF super flyweight title on December 11, 2000. The bout resulted in a 12-round unanimous decision loss for Kawashima. Kawashima scored three knockdowns en route to a unanimous decision victory in his first world title defense on September 20, 2004.
One judge had scored 11 of 12 rounds in favor of Navarro, while the other two scored it closely in favor of Kawashima, who was cut over both eyes for most of the fight.
Kawashima met Masamori Tokuyama for the third time on July 18, 2005, for his third defense of the world title. Kawashima managed to knockdown Tokuyama in the 12th round, but was unable to mount a consistent offense for the rest of the fight as Tokuyama regained his title by unanimous decision.
On September 18, 2006, Kawashima fought Cristian Mijares for the WBC super flyweight interim title. He managed to knock down his opponent in the 2nd round, but lost a close split decision where two judges scored the fight for Mijares by only one point (114-113), and the other judge scored the fight for Kawashima also by one point.
The rematch was held on January 3, 2007, and Kawashima lost by technical knockout in the tenth round after suffering a knockdown which was regarded as a slip by the referee.
This was the first time Kawashima had been knocked out in his entire career. He announced his retirement for the third time after the fight. His professional record was 32-7-0 (21KOs).