How to Handle an Ancient Male Lead Who's a Death Warrior

The story of a battle-crazed woman, formerly a marshal of the Interstellar Empire and now a female space pirate, who arrives on ancient-era Blue Star to save an old comrade and meets the male lead, a death warrior.

Then she wants to, in a pun, make use of him.

Theme: A woman has to be a little bad to win over a loyal guard-type death warrior