Complex sentence: Sometime after his training, Gonnosake went out on the road, travelling through Japan with a few followers as a wandering swordsman, always looking for an opponent to fight duels with and at the same time teaching swordsmanship to a selected few.
Split into simpler sentences: Sometime after his training, Gonnosake went out on the road. He was travelling throughout Japan with a few followers as a wandering swordsman, always looking for an opponent to fight duels with and at the same time teaching swordsmanship to a selected few.