Chapter 126: My Student owns my hole -4

Riven’s text arrived just after Emrys finished his last lecture of the day. The message was short and direct.

Come to the empty restroom on the second floor of the science building. You have five minutes. Door locks from the inside. Do not make me wait.

Emrys locked his office and walked the hallway with a tight stomach. The restroom sat at the end of a quiet corridor.

He pushed the door open and found Riven already inside. The student turned the lock the moment Emrys stepped through.

"Strip down to nothing," Riven said. "Fold everything and set it on the counter. Then face the wall and put your hands flat against the tile."

Emrys obeyed without speaking. Shirt, trousers, briefs, and socks landed in a neat pile. He turned to the wall and pressed both palms to the cool surface.

The position left his bare ass fully exposed under the bright fluorescent lights. Riven stepped up behind him and ran one hand down the length of his spine until his fingers reached the cleft.

"You stayed soft through most of today’s classes," Riven said. "That means the plug yesterday was not enough of a reminder. Today you get something more public."

He reached into his backpack and pulled out a short length of soft black rope and a thick black plug that looked larger than the six-inch one from the day before.

Emrys’s eyes widened when he saw the new toy in the mirror above the sinks.

"That is seven inches," Riven said. "And thicker. Turn around. Stroke yourself until you are fully hard. I want to watch."

Emrys turned. His cock still hung soft. He wrapped his right hand around it and stroked with firm, steady pulls.

Blood filled the shaft slowly under the pressure of the student’s stare. After a full minute the cock stood rigid and flushed. Riven nodded once.

"Hands behind your back."

Emrys locked his wrists together. Riven stepped in close and looped the rope around both wrists in tight, practiced turns. He finished with a secure knot that left no slack. The binding forced Emrys’s shoulders back and lifted his chest.

"Bend over the counter. Chest down. Ass out."

Emrys draped himself across the cold laminate. The position spread his cheeks open.

Riven coated the new plug with lube from a small bottle, pressed the tapered head against the older man’s hole, and pushed.

The thicker shaft forced Emrys open with a slow, relentless stretch. He bit down on a groan as the full seven inches slid inside until the base sat flush against his skin.

The pressure on his prostate was immediate and heavy. His hard cock jerked hard against the edge of the counter.

Riven wiped his hands and stepped back. "Stand up. Walk to the door and unlock it."

Emrys’s eyes snapped to the locked door. "Someone could walk in."

"That is the point. Unlock it. Then come back here and face me."

The older man reluctantly walked the short distance with the thick plug shifting inside him on every step.

He turned the lock and returned to the center of the restroom. His cock stood rigid and leaking. The rope kept his arms locked behind him.

Riven leaned against the counter and looked him over. "You are going to edge yourself right here. Three times. Door unlocked. Anyone who needs to piss can walk in and see the professor with his cock out and a plug in his ass. If someone comes in you will stay exactly as you are until I tell you otherwise. You are lucky that most people have gone home and it’s unlikely for you to get an audience. Start stroking."

Emrys’s face burned, but his bound hands could not reach. Riven gave a short laugh and stepped forward. He wrapped his own fist around the older man’s cock and stroked him with rough, efficient pulls.

"I will do it for you this time. You just stand there and take it."

The firm grip dragged Emrys to the edge fast. The plug pressed deeper every time his hips twitched.

Precum slicked Riven’s fingers. Emrys’s breathing turned sharp and broken. Just as the first pulse of orgasm gathered Riven released him completely.

"One," Riven counted. "Hands stay where they are. Do not move."

Emrys stood shaking in the middle of the open restroom. His cock bobbed in the air, dark and shiny. Footsteps passed in the hallway outside. Neither of them spoke until the sound faded.

Riven gripped him again and stroked harder. The second edge arrived even faster. Emrys’s thighs trembled. His hole clenched around the thick plug. Riven stopped at the exact moment the older man’s balls drew up tight.

"Two. You are doing well. One more."

The third round left Emrys nearly sobbing with need. He begged Riven to let him cum this time but Riven’s fist kept moving in short, punishing strokes that kept him right on the brink for several long seconds before the hand disappeared again.

"Three. Look at the mess you made on the floor."

A thin string of precum hung from the tip of Emrys’s cock and dripped onto the tile. Riven walked behind him, gripped the base of the plug, and twisted it in a slow circle that forced a broken sound from the professor’s throat.

"You stay plugged and bound until I decide otherwise. Turn around and face the sinks."

Emrys turned. Riven opened his own jeans and freed his thick cock. It was already hard.

He held Emrys head and led him to his knees. He then stepped in close and rubbed the head across Emrys’s lips.

"Open. You will suck me until I come. If anyone walks in you will keep your mouth full and your eyes down. Understand?"

"Yes."

Riven pushed forward. The heavy shaft filled Emrys’s mouth in one steady thrust. The older man choked once, then forced himself to relax and take it.

Riven gripped the rope that bound Emrys’s wrists and used it as a handle to control the depth. He fucked the professor’s throat with deep, measured strokes while the unlocked door stood only a few feet away.

Footsteps approached again. Riven did not slow down. The door handle turned. Emrys’s eyes widened, but Riven held him firmly in place with the rope.

A student pushed the door open halfway, saw the two figures, muttered an apology, and backed out at once. The door swung shut again. Riven never stopped thrusting.

"Good," he said. "You stayed put. Keep sucking."

He drove deeper until his balls pressed against Emrys’s chin. The older man’s throat worked around the thick cock.

Spit ran down his chin and dripped onto the floor. Riven’s breathing grew heavier. He pulled free at the last second and kept stroking himself.

He ordered Emrys to stick out his tongue as he was about to cum and painted Emrys’s face and open mouth with thick ropes of cum.

Some landed on the older man’s tongue. The rest streaked across his cheeks and lips.

Riven stepped back and looked at the result. "Leave it. Do not wipe anything off. I am going to untie your wrists now. Pull your clothes on over the plug. You will walk back to your office like this. Face still wet. Cock still hard. Plug still in. Anyone who looks close enough will know something happened."

He freed the rope and watched Emrys dress with shaking hands. The seven-inch plug forced the older man to take careful steps.

Cum cooled on his face as he fastened his trousers over the obvious bulge. Riven opened the door and gestured for him to leave first.

"Go to your office, I’ll be there in ten minutes. Door stays unlocked this time. I will decide when the plug comes out and whether you get to come tonight or not. Move."

Emrys walked the hallway with heat burning across his skin. Every step reminded him of the thick shaft buried inside him.

He still had the taste of Riven’s release on his tongue. Students passed him without comment, yet he felt exposed under every glance- even though he knew it was too dark for anyone to see anything.

The near-public risk had settled deep in his gut and kept his cock aching against the fabric of his pants.

He reached his office, left the door open as ordered, and waited for the student who now controlled every part of his day.

Emrys has always prided himself on being open-minded, but never once did he imagine that he would be dominated, edged, punished, fucked, and denied by his student - and worst of all, he craved and enjoyed all of it.

Riven walked into the office without knocking and closed the door behind him, leaving it unlocked.

Emrys stood beside the desk exactly as ordered, his face still streaked with drying cum, trousers tented hard from the seven-inch plug that filled him.

Riven looked him over once and pointed at the floor in front of the desk.

"Get on your knees and place your hands behind your back. Keep your eyes on me."