On May 11, the crown prince of the Russian Empire (the Tsar's son, Tsarevich Nicholas) who would become Nicholai II (Tsarevich Nicholas II) was wounded seriously in the attack by a thug (Otsu Incident) during his visit to Japan, and people seethed in all over Japan.
5月11日来日中のロシア帝国のニコライ2世が暴漢に襲われて重傷を負う事件が発生（大津事件）、日本中が騒然となった。