 His first manga was "Shitamachi Benkei", but his breakthrough came in 1984 when he published the popular manga "", also known as Silver Fang, or Silver Fang Legend Gin, the story about a dog who goes in search of other dogs to fight a bear named Akakabuto.He got the idea in 1980 when he read an article about domestic dogs that ran away from their owners and lived as wild dogs in the mountains.The pure idea fascinated him, which led him to create the manga about the puppy.