Kawamoto was born in Kanagawa Prefecture on June 21, 1971.
After graduating from Tokai University, he joined the Japan Football League club Fujitsu (later Kawasaki Frontale) in 1994.
He became a regular player as center back from the first season.
In 1998, he became a regular player again and the club won second place and was promoted to the new J2 League in 1999.
This biographical article related to a Japanese association football defender born in the 1970s is a stub.