There is a famous episode that he achieved to construct Sunomata Castle in one night in the middle of the battle with Tatsuoki SAITO of Mino province; this episode was described in 'Buko-yawa' and others, but there is no description of historical data in the document, so it is considered to be a fiction in Edo Period.
美濃国の斎藤龍興との戦いのなかで、墨俣一夜城建設に功績を上げた話が有名だが、『武功夜話』などを典拠とするこのエピソードは当時の史料に関係する記述がなく江戸時代の創作であるとする説が強い。