Koiso's record was far from stellar, but he has his place in DNW Japan's history. He was the first ever fighter to compete at the fourth level in the sport, competing in UFL, Socat, and ProXC. Despite his sub .500 record, Koiso picked up 13 victories, 9 of which didn't see the judges scorecards. Koiso will be remembered as a fighter that always came to put on a show win or lose, and as an individual that helped put DNW Japan on the map.