主君(しゅくん)が切腹(せっぷく)した血の(ちの)ついた短刀(たんとう)を受け取り(うけとり)、固く(かたく)仇討ち(あだうち)を誓った(ちかった)

Because drawing a blade in the palace was strictly forbidden, Enya Hangan was ordered to commit seppuku, his fief was confiscated, and his house dismantled. The chief retainer, Oboshi Yuranosuke, took the dagger stained with his lord's dying blood as a keepsake and firmly swore revenge in his heart. The sad battle of the samurai begins here.