Gutts Ishimatsu, the pioneering boxer and entertainer who became a fixture in Japanese pop culture, passed away on June 2 at a Tokyo hospital due to pneumonia. He was 76.

Born in 1949 in Tochigi Prefecture, Ishimatsu rose to prominence as a professional boxer, earning his place in sports history as Japan's first lightweight world champion. After retiring from the ring, he successfully transitioned into entertainment, establishing himself as a television personality and actor while maintaining visibility across multiple media.

Beyond his boxing and acting careers, Ishimatsu also recorded music. His discography included tracks like "Ishimatsu Otoko Bushi," "Ki ga Kakari," and "Jinsei Otoko Michi." His musical presence extended into the 2010s—in 2015, he collaborated with the group Pokaska Jang on the track "OK Shokudo."

His cultural impact proved durable enough to attract appearances in music videos well into recent years. He famously showed up in a 2015 music video for the group Tsuri Bit and appeared in a drama-style music video for Bakusute Sotogawara Icchome's "Kyouhakusha" in 2019.

According to his agency, Gutts Enterprise, funeral arrangements were held privately for close family members only. The company has not yet confirmed plans for a public memorial service, stating they will provide further updates as needed.

In a final statement that captured Ishimatsu's warmth and signature catchphrase, the agency wrote: "Every time you make a Gutts pose, we hope you'll remember Gutts Ishimatsu." The official message closed with his iconic phrase, "OK Bokujo!"

Ishimatsu's legacy spans multiple generations of Japanese entertainment, from his groundbreaking boxing achievements to his enduring presence as a beloved television personality and occasional musical artist.