Career
His entrance music is Spente Le Stelle. Wins Japanese national title On January 23, 2000, he fought against Shingo Takayama"s SNKA Japanese lightweight championship. Against Somluck Kamsing On November 6, 2004, he fought against Somluck Kamsing from Thailand.
The bout was resulted as draw (30-30, 30-30, 30-30) in the end of 3rd round.
Wins Rajadamnern Stadium title On October 2, 2011, Ishii fought against Apisak Knight of the Order of the Thistle Gym for the vacant title of Rajadamnern Stadium championship at super lightweight. He lost his title to Aikpet Mor.
Krongthepthonburi at Magnum 31 in Tokyo on March 10, 2013 when he was knocked out with an elbow in the fourth by the Thai. He lost to Kaew Fairtex by second round high kick KO for a WPMF super lightweight championship at Rikix: Number Kick, Number Life 2014 in Tokyo, Japan on February 11, 2014.
Amateur Professional.