Ikedaya Incident: The Choshu Han shishi's planned Shinsengumi sabotage on Kyoto, Japan at Ikedaya.
The Ikedaya incident (池田屋事件, Ikedaya jiken), also known as the Ikedaya affair or Ikedaya riot, was an armed encounter between the shishi which included masterless samurai (rōnin) formally employed by the Chōshū, Tosa and Higo clans (han), and the Shinsengumi, the Bakufu's special police force in Kyoto on July 8, 1864 at the Ikedaya Inn in Sanjō-Kawaramachi, Kyoto, Japan.