"Buko-den" explains that in his later years, Musashi often told his disciples that he had beaten the Yoshioka; however, when he was alive, some people might have been already saying that the Yoshioka had beaten Musashi.
『武公伝』の話に従えば、晩年の武蔵は弟子等に盛んに吉岡に勝利したことを語っていたが、武蔵の生前に巷間に「吉岡が勝利した」という異説があったと考えることができる。