Eren is almost certain that he is going insane.

"D-Daddy! Please!" His cries fill the otherwise silent room.

"What's wrong, love?" Erwin murmurs sweetly from behind, rocking his hips and pushing even deeper inside of Eren.

"I c-can't, Daddy."

Warm lips press against the back of Eren's neck and he moans, desperately wishing he could reach back and wrap his arm around his Daddy's neck. He tugs his bound wrists uselessly.

"Sure you can, sweet boy. You've been so good for me."

Eren shudders at the words and the movement sends more rivulets of sweat dripping down his body. He's bound in strappado, bent forward with his arms tied behind his back and locked into place by a rope in the ceiling. The position immobilizes him completely from the waist up, and a spreader bar strapped to his ankles takes away any remaining freedom he might have of his legs. He's completely at Erwin's mercy, and he knows from experience that there isn't much mercy to be given when it comes to Erwin.

The man is absolutely ruthless when they play. He's a sadist, but not in the traditional sense. Erwin sees no point in floggers or whips when he can make Eren sob in agony from pent-up tension and unrelenting pleasure. The pain he gives to Eren is one of pure frustration. Erwin never lets Eren come during their scenes together. Eren would complain but he cannot deny the furious thrill of both anger and arousal he gets from the repeated refusal to grant him release. Playing with Erwin is a constant struggle between the need to fight for his orgasm and the need to submit at Erwin's feet. The effect it has on Eren's psyche during play is mind-blowing. The only time he gets anything resembling relief is—

"Looks like we have a visitor, love," Erwin says softly, lips brushing against the shell of Eren's ear. Eren already knows they're being watched, but the reminder of that fact sends a thrill through him. His caged cock drips with pre-cum, and the frustration of his denied release burns him.

A hand makes its way up Eren's back and fingers tangle in his hair. He lets out a cry as his head is sharply turned to face the large floor-to-ceiling windows of Erwin's living room. It's dark outside, but Eren struggles through the haze of pain and pleasure to see any sign of movement. His cock twitches pathetically when he sees the burning end of a cigarette just a few feet away from the other side of the window.

"Do you see him, Eren?" Erwin asks, question punctuated by a particularly hard thrust. Eren feels like the air is being punched out of his lungs. When he doesn't respond, the fingers in his hair tighten.

"I asked you a question, Eren." There's a note of warning in Erwin's voice and Eren struggles to catch his breath. Right. Failure to respond always ends with a trip over Daddy's knee and a certain wooden spoon that Eren loathes with a burning passion.

"Y-yes Daddy," he whimpers softly. Eren groans when his answer is rewarded with a sharp swat to his rear. A mild reminder of the punishment he came close to receiving. Eren hates it when playtime is interrupted by punishment, and therefore always attempts to be on his best behavior.

"Do you want him to come and play?" A second smack accompanies the question. Eren tries to rock back onto Erwin's cock, eyes not leaving the glowing ember of the cigarette outside.

"Please Daddy." Eren is starting to tumble down deeper into his headspace. The anticipation of more pain—real pain—makes him feel floaty and light. More pre-cum dribbles from his caged cock as he thinks about what's coming for him from the other side of the window. Erwin's chuckle vibrates against the skin of Eren's throat as his Daddy licks a stripe from his shoulder to his jaw.

"If you want him to come and play, you're going to have to ask him nicely."

Eren knows what that means. Daddy wants him to beg. He whines with impatience. He hates begging. Hates it when Erwin forces him to ask for what he wants. After all this time, Eren still struggles with acknowledging his kinks and desires. But he also knows that if he doesn't do what Daddy wants, Eren won't get what he wants. So he focuses on the red dot of light outside…and begs.

"Pl-please come play with m-me, Corporal." A fresh flush breaks out all over his body as the words leave his mouth in a meek whimper.

"I don't know if he heard you, love. Might need to speak up a bit."

Damnit.

"Please, Corporal. Please come play with me." The words aren't much louder than the first time. But to be fair, Eren's not feeling very coherent in the first place at the moment.

Smack.

"Louder!"

"Please Corporal!" Eren sobs, humiliation washing over him like hot water and pre-cum dribbling in a steady stream to the hard wood floors. "Please come play with me Corporal! Please come play with your p-puppy. Please please please!" He's given up his attempt to maintain focus on the burning cigarette outside, head hanging as tears of want and pain and pleasure roll down his cheeks, falling from the tip of his nose and joining the growing puddle of pre-cum on the floor.

"Such a good boy," Erwin soothes, fingers moving from Eren's hair to stroke lovingly down his back. Eren relaxes into the soft touches, always eager for Daddy's praise and affection.

His body tenses up quickly, though, when he hears the snick of the door to the back patio opening and then closing. Eren starts trembling as the thud thud of heavy boots slowly cross the floor. Eren tries to ground himself with the small movements of Erwin's cock still sliding in and out of his body. But nothing has ever been able to properly prepare him for the experience of having both his Doms present for a scene.

Eren breathes in deeply, but each exhale is shaky and chopped up by Daddy's thrusts. The footfalls gradually get closer before stopping right in front of Eren. He slowly opens eyes that he hadn't realized were closed, and looks down at the shiny black leather of the Corporal's boots. Eren can feel his mouth watering at the sight of those boots. They represent everything his Corporal can do to and with him, the various ways that his Corporal can make him crawl.

"Hello pet." Eren squeezes his eyes shut and bites out a moan at the sound of that voice. The voice that has ordered him on numerous occasions to do filthy, wonderful, awful, glorious things.

"Hello, sir," Eren replies, not wanting to be punished for a lack of an answer. He watches as the legs in front of him bend at the knee into a crouch, bringing his Corporal's face into view. Eren can't help staring into those hard grey eyes.

If Daddy uses pleasure to bring Eren pain, then the Corporal does the exact opposite. Their one-on-one scenes together are the only time that Eren is released from his cock cage. Even then, Eren is almost always tied up in some way. And then his Corporal begins his attempts to beat the orgasm out of Eren.

Sometimes he succeeds, and it's agonizingly brilliant. Sometimes he fails, and it's infuriatingly awful. Scenes with the Corporal are the times when Eren sees the whips, the floggers, the canes. He usually has a hard time sitting during the days following his scenes with the Corporal. The memory of his Corporal using Eren's masochism against him stays imprinted on his backside, reminding him of either an excruciating orgasm or wailing frustration as the Corporal squeezed Eren back into his cock cage.

A sharp smack across the face brings Eren out of his daze. He shakes his head in an attempt to clear it. If he falls too far into sub space they stop the scene, and he doesn't want this to be over so soon.

"There's my boy," the Corporal coos as Eren returns to awareness. "Are you ready to play, pet?" Eren gasps as he feels the familiar slide of a riding crop traveling down his spine.

m"Yes Corporal." Eren's answer is firm, and he waits with baited breath, trying to prepare himself for the unbelievable horror and undeniable ecstasy that is Erwin Smith and Levi Ackerman.