Toyo then won the National Sports Festival football tournament in 1962 and were Emperor's Cup semifinalists (1961, 1962) and quarterfinalists (1963) with Funamoto at goalkeeper.
With Funamoto and his former high school teammates, Toyo dominated the JSL for the first six years, winning the championship five times (1965, 1966, 1967, 1968, 1970) and placing second once (1969).
As goalkeeper, Funamoto played a critical role on Toyo's early success in the JSL when they won 75 of their first 112 matches (67%), allowing opponents just 87 goals.
The golden era of Hiroshima football then came to an end over the next three years when the club won 15 of 54 matches (28%), while allowing 82 goals.
He shared goalkeeping duties with two-time Olympian, Kenzo Yokoyama, on the Japan national team from 1967 to 1975.
He currently enjoys retirement in Hiroshima City, playing golf with friends, gardening, and watching football with his family.