Yasuda grew up in the () in 1932. His father was from the Saga Prefecture and a right wing activist, but he soon started the fur and leather business. He moved to Kawasaki shortly after Yasuda was born and was evacuated when he was in the sixth grade from the . Yasuda then moved to (also known as Kakio, Kawasaki City), where his mother's parents' home lived, and failed his grades when he was in the first year of the old . Aspiring to become a soldier, Yasuda applied to the , but due to his fail grades, he changed his career to the path of music and learned to used the cornet by himself.