The Protect Ring
"Nngh...!"
The one who cried out was not Dong-hyun. It was Adrian.
She had bitten down on his cock, unable to endure the humiliation a moment longer — and yet she was the one in pain. The instant her teeth closed, a sensation like shattering enamel exploded through her mouth.
The source was none other than the Protect Ring Yuria had procured for him. Slip the ring onto the base of the glans and it would sense danger to the wearer, defending up to three times a day. This world had no magic, but enchanted artifacts still surfaced now and then from ancient ruins, and the imperial family's resources had been enough to obtain one.
The Protect Ring had originally been designed to be worn on a finger. The moment it was put on, however, it resized itself to fit — which meant it could just as easily be slipped onto a cock. Worn on a finger, it intercepted attacks against the entire body, though the defense itself was relatively weak. Worn on a specific part, it made that part far harder.
Had the previous emperor known, he might have used it himself — but the ring had only been unearthed recently. And even then, it was Duke Balanos who had excavated the ruin, which was how Yuria had known about it. The instant Adrian's bite was detected, Dong-hyun's cock hardened like steel, and she was the one who suffered for it.
"Heh heh heh. Did you really think I'd just shove my cock in your mouth without thinking? Well? Go on. Bite it again."
The auto-recharge function meant that, in practice, it could only defend once a day — but Adrian had no way of knowing that. She had learned that biting his cock meant unbearable pain for herself. She wouldn't dare try anything reckless now.
Dong-hyun adjusted her chains again, locking her in place, then seized her head and drove his hips forward with renewed force.
"Ghhk—! Cough, cough!"
His thick cock rammed against her uvula and she gagged hard, but Dong-hyun showed no mercy. If she had just stayed quiet and not tried to bite him, he wouldn't have been this brutal. A beast that misbehaved needed a thorough punishment, or it would never learn to stay down.
"Ghhhk... khhhk!"
He slammed his hips even harder. Her airway was completely blocked now; she couldn't draw a proper breath. Even as she suffocated, the agony in her teeth was so horrific she didn't dare try to bite him again. She thrashed as the air ran out, but her body was bound. There was no escaping his grip.
Five minutes passed before Dong-hyun finished, flooding her mouth with cum.
"Swallow it. If you don't, I'll gag you and keep fucking your mouth."
At his threat, Adrian began swallowing the semen filling her mouth. Going five full minutes without a proper breath had shaken her badly.
"Open your mouth. I need to check you swallowed it all."
Once again, she opened wide and let him inspect every corner. The next instant, his hand went into her mouth — and shoved a gag in. He buckled it tight behind her head. An O-ring on the inside kept her jaws from closing. It was sized so his cock could still fit through easily, leaving Adrian locked in place with her mouth forced wide open.
"Mmph?! Mmmphhh!!"
Her eyes went round. She couldn't seem to process what had just happened.
"A dog that tries to bite its master needs a proper lesson, or it'll just do it again. Right?"
Adrian shook her head frantically, trying to protest, but the gag made speech impossible. Dong-hyun stepped in front of her and pushed his fingers into her mouth.
"Hahh... haaahhh!!"
She struggled, but he caught her tongue and pulled it out, then clamped it and held it stretched. Panic flashed through her eyes.
"I'm going to fuck your mouth again. What do you think you should do with that tongue?"
"Aaaah... aaah..."
"Ah, right — you can't talk. Use that tongue and lick my cock properly, and I'll cum fast. If you don't... well. I'll just keep fucking your throat until you suffocate. Got it?"
Adrian's head bobbed in a frantic nod.
"Good. Looks like you're ready. Let's begin."
Even after cumming once, his cock hadn't flagged in the slightest. He shoved it back into her mouth. He'd released the clamp, so she did her best to work her tongue along his shaft — but skill that had never existed wasn't going to appear overnight.
"Your tongue work's pretty mediocre."
He said it as he drove even deeper.
"Ghhk... khk! Khk!"
She was on the verge of passing out, but he didn't ease up. That was when it finally sank in: the only way out was to make him cum. Even as she suffocated, she worked her tongue desperately along his cock. She moved like her life depended on it — because it did.
Thanks to that, he came in just two minutes. He'd deliberately let go the moment the urge hit, dumping everything into her mouth — that was the only reason it had been so quick. His time with Yuria had taught him a few tricks. He could control his orgasm now. If he'd decided not to cum, Adrian would have suffocated to death.
"Hmm. Still not quite there. Let's go again."
Something — cum or drool, or both — spilled from Adrian's mouth. Tears streamed from her eyes, the automatic tears of a throat being stabbed over and over. And with her mouth forced open, swallowing was hard; some of it leaked out no matter what she did.
Dong-hyun's brutal lesson didn't end until he'd cum three more times. Compared to the first time he'd shoved it in, her tongue work had improved considerably. Satisfied with the results, he unbuckled the gag.
"Well? Still feeling rebellious?"
Adrian shook her head hard.
"I want you to service me with your mouth. What do you say? Are you going to do it properly?"
For a moment, she couldn't answer.
"I guess not. Then I'll just have to gag you again."
Adrian clamped her mouth shut.
"Pfft. You think that means I can't open it?"
Dong-hyun drew the dagger at his hip. It was a fine blade — the kind an emperor would carry.
"Shall I pry it open with this? Or are you going to open it yourself?"
"I—I'm sorry. Please... let me suck it myself."
Her face was white with terror. Twenty minutes of controlled asphyxiation had left its mark. That was probably why the honorifics were coming more naturally than they had yesterday.
"Pfft. Honorifics, just like that? Do you actually want to suck me that badly?"
"Yes. I do. Please let me suck it."
"You have to say exactly what you want to suck. How else would I know?"
"Your... that place."
"And what is 'that place'?"
Dong-hyun smiled, pressing her.
"Please... let me suck your cock."
She was burning with shame.
"You won't spread your legs on your own, but you want to suck my cock... Not exactly what I wanted, but I'll take it for now."
He adjusted the chains again, giving her just enough slack to move. Adrian crept toward him, sank to her knees, and took his cock in both hands.
"You should greet it properly before you suck it, don't you think? It is the emperor's cock, after all."
Adrian closed her eyes, took a deep breath, and spoke.
"Thank you for allowing me to suck Your Majesty the Emperor's cock. I will... begin now."
She opened her mouth and began sucking him — more deferential this time, and far gentler. She used her tongue properly now, wrapping it around him, proving the earlier lesson had taken.
"Nngh... not bad. This good after just one day? If you could do it like this, why'd you pull away before? You just made it harder on yourself. You were going to submit eventually anyway. Right?"
She didn't react to the taunt. She just kept sucking him with painstaking care. Dong-hyun settled in and let himself enjoy it properly. It felt good. His hand found her red hair of its own accord, stroking it as he savored the sensation.
This time, biting him never even crossed her mind. The price of that one act of defiance had been too high. She didn't have the courage left.
"Nngh... I'm cumming. Swallow it."
The orgasm hit, and he emptied himself into her mouth without holding back. It was already his sixth load, and there was still plenty of it. Adrian didn't let a single drop escape.
"Hahh... that was good. Now lie down."
The praise and the order came as one.
"What?"
"I got what I wanted. Now it's your turn, isn't it?"
It was an absurd demand, but she didn't have the presence of mind to argue. Dong-hyun gave her chest a light shove, and she toppled onto her back. He'd barely pushed her, and she went down without the slightest resistance.
"What are you waiting for? Spread your legs."