Vengeance - Revenge of the Fierce

…It is said that on January 21, 1590 (Tensho 18), Iinuma Hatsugorō killed his brother's enemy, Kato Kōsuke. It is commonly known as “Tatsukatsu” or “Tatsukatsugoro.” Iinuma Sanpei, who served as the head of the castle construction department at Fushimi Castle, and Sato Gosuke fought, and Sanpei was ambushed by Gosuke. …

*Some of the terminology explanations that mention "revenge" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…1590年(天正18)1月21日，飯沼初五郎が兄の敵加藤幸助を討った実説によるという。通称《躄仇討》《躄勝五郎》。伏見城の城普請小頭をつとめる飯沼三平と佐藤剛助とが争い，三平は剛助に闇討される。…

※「《躄仇討》」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報