Sukeroku reveals that all of his fights were for checking for the treasured sword, that is, he picked a quarrel with them to make them get angry, to make them draw their swords, in order to check their swords.
その刀を詮議するため、他人に刀を抜かせる、抜かせるために相手を怒らせる、相手を怒らせるために喧嘩を吹っかけているのだ、喧嘩は全て宝刀の捜索のためであると、真実を明かした。