sentences:  In April 2003, he founded the Koga Juku, a judo school for young children, in Takatsu-ku, Kawasaki.One of his pupils, Ayumi Tanimoto, won the gold medal in the -63 kg division at the 2004 Summer Olympics.He became the head coach of the International Pacific University's judo team (located in Akaiwa, Okayama) in April 2007, and has enjoyed celebrity status in Japan as a 7th dan rank holder in judo, appearing on several national television shows.