- Toshihiko Koga attended 3000 people all night … Hidehiko Yoshida Tears of Sorrow “I can’t consider it a reality”Daily sports
- Toshihiko Koga From home to the funeral home, Hidehiko Yoshida and others (Nikkan Sports)Yahoo!
- Estela de Kawasaki, Olympic gold medalist in judo, Toshihiko Koga | NHK Greater Tokyo Area NewsNHK NEWS WEB
- “Heisei Sanshiro” Toshihiko Koga travels gracefully at night … IOC President Bach also offers his condolences.auone.jp
- Shizuoka City / Minamiizu, where Judo / Toshihiko Koga emigrated … People from the city who are saddened by the sudden news “A month ago I was running around here …” (Shizuoka Asahi Television) – Yahoo! NewsYahoo!
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