According to 'Okado hikki,' Naganori only said, "I attacked him for my own personal revenge because I was extremely angry. I have nothing to say no matter what crime I am accused of. All I can say is that I highly regret failing to kill Kozuke no suke."
「多門筆記」によればその際に長矩は｢上へ対し奉りいささかの御怨みこれ無く候へども、私の遺恨これあり、一己の宿意を以って前後忘却仕り討ち果たすべく候て刃傷に及び候。此の上如何様のお咎め仰せつけられ候共、御返答申し上ぐべき筋これ無く、さりながら上野介を打ち損じ候儀、如何にも残念に存じ候。｣とだけ述べた。