In addition, dismissed Koga with Michiteru OTAGI were sentenced to exposure of their severed heads in 1872 on the charge of the attempt to topple the government (Nikyo Jiken [The Incidents triggered by two court nobles]).
なお免官となった古賀は翌1872年、愛宕通旭らとともに新政府転覆のための挙兵を企てた（二卿事件）ことをもって梟首に処せられている。