expression, godan verb (-u)
fight to the death; fight to the bitter end
Expresses a resolute determination to keep fighting until death, often used in dramatic or emphatic contexts.
彼らは自由のために死ぬまで戦う覚悟だった。
They were prepared to fight to the death for freedom.
この信念のためなら、死ぬまで
For this belief, I intend to fight until I die.