Someone who knows how to fight and actively fights, ML has a small role. like in the emperor and his knight or sword and dress or i'm a martial arts villainess
Started reading this a long time ago and didn't finish while waiting for updates, but The Mask of a Siren had a pretty strong, independent female MC. It's not a translation but an original novel though.
My bad, totally missed the tag. Just clicked the title under new posts and only read the content. The King and His Knight is very good, really enjoyed that one. Only thing I can think of is Mookhyang - The Dark Lady, but it's technically gender bender since its an OP swordsman who turns into a female due to a curse. I'm not even sure if there is a "male lead" since the protagonist is actually a "he." Might not be what you're looking for, but you can try it if you like the art style.
Recently i've been reading The Way To Protect The Female Lead's Older Brother. Pretty dope. Been liking FML so far, she's good. The story haven't been ruined by romance so far.
Unfortunately, from what i remember that devolves into the usual cliche shit where the mysterious, smug, super OP prince overshadows the F!MC.
In manga form... haaa, Kumo-chan probably isn't the badass you're looking for... I was a sword when I reincarnated? Hero King Reincarnate? Her Majesty's Swarm?
A Poisonous Lily Delivery Knight I’m a Killer but I’m Thinking of Living as a Princess God bless you Crimson Karma Contract Concubine I Want to Be You, Just For A Day A Red Knight Does Not Blindly Follow Money Oresama Teacher
Raise Wa Tanin Ga Ii The female lead is a daughter of the yakuza family and it shows. Male lead is in one too and it really shows. I don't know about the regularly fighting part but she is pretty badass. It's kinda like she's above fighting? She can ruin you without fighting or something.
Change 123 Claymore Gunnm (Battle Angel Alita) Kumo Desu ga Nani ka? (reincaranted as a monster) GitS Appleseed & Cross Ange (anime)
I'd like to recommend Beware of the Villainess! FL is pretty badass but it's kinda a hit or miss for some people tho ;-;