Just at that time, Takasugi and his comrades (Genzui KUSAKA, Yahachiro YAMATO, Kurata NAGAMINE, Monta SHIJI, Gozo MATSUSHIMA, Chuzaburo TERAJIMA, Kumajiro ARIYOSHI, Mikinojo AKANE, Yozo YAMAO and Yajiro SHINAGAWA) conspired to kill the foreign ministers who often holidayed in Kanazawa in Musashi Province (Kanazawa Hakkei).
折りしも、外国公使がしばしば武州金澤（金澤八景)で遊ぶからそこで刺殺しようと同志（高杉晋作、久坂玄瑞、大和弥八郎、長嶺内蔵太、志道聞多、松島剛蔵、寺島忠三郎、有吉熊次郎、赤禰幹之丞、山尾庸三、品川弥二郎）が相談した。