In another theory, he was attacked at the Ikedaya and ran back to the Lord of Choshu's Kyoto mansion to raise the alarm but, unable to open the gate, he killed himself with his sword.
また別の説として、池田屋で襲撃を受け、事態を長州藩邸に知らせに走ったが門は開けられる事無く、門前で自刃したという話もある。