Sister Celestine slammed the chapel door shut, her power armor still streaked with xenos blood. The young battle sister dropped to her knees in front of the scarred guardsman she'd dragged in from the front lines. "Strip, soldier. The Emperor demands penance tonight, and you're going to fuck it out of me."
Private Renn tore off his fatigues, his thick cock already hard and leaking. Celestine yanked her own armor plates aside, exposing heavy tits and a shaved cunt glistening with sweat and arousal. She grabbed his shaft and spat on it, stroking fast and rough. "Shove it in. No mercy. I've killed heretics all day and I need this cock splitting me open."
Renn thrust into her wet pussy in one hard stroke. Celestine grunted, gripping his ass to pull him deeper. "That's it, fill that heretical hole.
Pound me like you're purging a daemon." He fucked her on the cold stone floor, balls slapping against her ass with every brutal slam. Her juices coated his cock, dripping down to soak the floor. She clawed his back, biting his shoulder while he hammered her cervix.
She flipped him onto his back and straddled him, sinking down until his full length stretched her cunt wide. "Watch these tits bounce while I ride you raw." Celestine slammed her hips down again and again, grinding her clit against him. Renn reached up and squeezed her nipples hard, twisting until she moaned like a cheap hive whore. "Call me your filthy sister-slut," she demanded.
"You're my filthy sister-slut," he growled, thrusting up to meet her. "Your tight cunt's sucking my cock like it wants a load of cum."
Celestine came first, pussy clenching and squirting around him. She kept riding through the orgasm, demanding more. "Don't stop. Fill me up. I want that cum leaking out of me during morning prayers." Renn flipped her onto all fours and slammed back in, pounding her from behind. He spat on her asshole and worked a finger inside while his cock wrecked her pussy. Celestine pushed back, taking every inch. "Deeper, you bastard. Treat me like the slut I am under this armor."
He pulled out, flipped her again, and shoved his cock into her mouth. Celestine sucked greedily, tasting her own cunt on him. She gagged when he fucked her throat but kept swallowing, drool running down her chin onto her tits. When he pulled back she begged, "Cum on my face. Mark your penitent whore."
Renn stroked once and painted her lips, cheeks, and tits with thick ropes of cum. Celestine licked what she could reach, then scooped the rest into her mouth. She swallowed with a satisfied groan. "Again. The night is young and the Emperor's work never ends."
They went at it for hours. Renn bent her over the altar and fucked her ass next, stretching the tight ring until she was screaming filthy prayers. He came inside her bowels, then made her clean his cock with her tongue. She rode his face afterward, grinding her cum-filled pussy on his mouth while he licked her swollen clit. Every position was raw and direct: standing against the stained glass, her legs locked around his waist; on the pews with her knees by her ears; even outside in the rain where anyone could see the armored sister getting railed like a camp follower.
By dawn Celestine was covered in cum, sweat, and bite marks. Her voice was hoarse from begging for more. Renn's cock was raw but still hard when she pushed him down one last time. "One more load down my throat before you report for duty." She sucked him slow and deep, fingers working his balls, until he flooded her mouth. She showed him the cum on her tongue before swallowing every drop.
She stood, armor half-fastened, cum still trickling down her thighs. "Same time tomorrow, soldier. The Emperor's work is never done." Renn saluted with a grin, already planning how he'd wreck her again. In the grim darkness of the 41st millennium, even Sisters of Battle needed a good, filthy fuck to keep the faith.
