Climb the stairs to the large Kuroganemochi tree at the entrance to Daion-ji and follow the path that heads to the grave of Matsudaira Zushonokami. He had been magistrate of Nagasaki for a year when, in 1808, the British warship HMS Phaeton sailed into Nagasaki harbour and seized two Dutch hostages. The British and Dutch were on opposite sides in the Napoleonic War at that time.

Unable to oppose the British, Zushonokami capitulated to their demands for supplies, then promptly disembowelled himself.