It is said that when Nagahiro ASANO, who was a brother of Asano Takumi no Kami and his adopted son, rushed from the residence for imperial envoys (current location of Japan Industrial Club at 1-4 Marunouchi, Chiyoda Ward, Tokyo) to the Tepposhu Kamiyashiki (one of the residences granted to the feudal lord) (current location of St. Luke's International Hospital in Akashi-cho, Chuo Ward, Tokyo) as soon as he received the news about the attack, he was in such panic and unable to answer any question from Asano Takumi no Kami's wife Aguri (later known as Yozenin) about Kozuke no suke's survival.
浅野内匠頭の弟であり、兄の養子に入っていた浅野長広は刃傷発生を知ると即刻伝奏屋敷（現在の東京都千代田区丸の内1-4日本工業倶楽部）から鉄砲州の上屋敷（現在の東京都中央区(東京都)明石町(東京都中央区)聖路加国際病院）に駆けつけたが、浅野内匠頭の正室の阿久里（後の瑤泉院）から上野介の生死について問われても答えられないほど狼狽していたといわれる。