Kentaro's faced many opponents, but Shinji Sasaki is one of his greatest rivals. Kentaro possesses great strength and agility, and is very hot-blooded in combat. Shinji, on the other hand, is always cool-headed and focused, and his speed and stealth equal Kentaro's power.

Although the two of them have worked together in the past, they desire to see which of them is the greater fighter. In every clash they've had so far, they've ended up at a stalemate. Who knows when the two will have their decisive match?