Burgie from Seven Deadly Sins The Four Knights of the Apocalypse ch4x-50, episodes 14-16. A sorceress bitch in a bikini.
She's introduced having a large hole torn in her chest but turns out to have put a decoy in her place.
Then Anne stabs her in the breast with a rapier and the villainess collapses face down.
She recovers but then Lancelot arrows her between the breasts, killing her for good. He carries her sexy corpse posed tits-up over his shoulder, puts her into a hole and buries her.