"Did Daddy hurt you again then, Malfoy? Put you over his knee like the child you are?" Harry taunted, sneering, his wand pointed directly at the smaller boy.
"Shut. Up." He said. His voice was taught with anger, and he stood rigidly, hands balled by his sides. He would have drawn his own wand, but Harry had already taken that from him.
Silently, Harry cast 'Petrificus Totalus', then 'Levicorpus'; floating Draco behind him as he paced in front of the wall, then entered the Room of Requirement. He closed the door and locked it, making sure he was the only one who could open it, before unceremoniously and simultaneously removing both spells.
Draco hit the floor with a thud, barely managing to get his hands down in front of him. He looked up at Harry with fear in his eyes, uncertainly getting to his feet. "What... do you want?" He asked cautiously.
"I want you to pay." Harry advanced on Draco, wand still in hand.
Draco backed away. "Please stop. I'll stop tormenting you and your friends, just please †please† stop this!"
Harry smiled predatorily. "No. You will pay, and by the time I am finished, you will be begging for my cock up your ass. You see, this isn't going to be a one-time thing."
"Wh-what?!" Draco's back hit the wall, and he looked desperately for a way past Harry - but he was too close.
"I'm sure you heard me. Now," Harry wound his hand into Draco's hair, pulling his head back to expose his long, elegant neck, "time to begin."
He suddenly let go, walking over to a large cupboard as he ordered Draco onto the bed without even a glance in his direction. When he turned round from taking something out of the cupboard and Draco had not moved, anger flared in his eyes. "I told you to get on the bed!" He snapped.
Draco flinched. "Please..." He whispered, barely audible.
"Follow my orders and I may restrain myself. Ignore them, and the consequences will not be pretty." Harry replied coldly.
Draco hesitated, then reluctantly walked over to the bed and sat on it.
"Get on your hands and knees."
Draco's eyes widened, and he suddenly stiffened. "N-no..."
"Do I have to repeat myself?" Harry's eyes were alight with anger again, and Draco trembled at the sheer power they held.
"I d-don't want to..."
Harry snorted. "You're not supposed to want to, Draco," he said, almost gently. "You just have to."
Draco shuddered. "But..."
"No excuses. You know you cannot escape me, Draco; so don't even bother trying."
Draco exhaled slowly, trying to calm down as he gingerly followed Harry's order.
Harry quickly cast a spell that stripped Draco, and then approached. He was carrying a small vibrator, a chastity belt, and a pot of delicately fragranced lube.
"Now, try to relax Draco, or this is going to hurt a lot more." He said, seating himself by Draco's rear.
"How am I supposed to do that, Potter?!"
Harry slapped Draco's ass once, hard. "You will address me as sir in this room."
"Why should I?" Draco attempted bravado, though his right cheek was still stinging.
Harry chuckled. "Because otherwise I'll do this." He suddenly plunged a forefinger into Draco's asshole, up to the 2nd knuckle.
Draco yelped, biting back tears.
"Have you learnt your lesson?"
"...yes, sir." Draco replied softly, hating himself for giving in so quickly.
"Good." Harry slowly removed his finger, taking care not to cause too much pain.
Once he had prepared Draco, Harry inserted the vibrator. Picking up the chastity belt, he asked softly "Are you okay, Draco?"
Draco was shaking, desperately holding back the tears in his eyes. But he replied with "Yes, sir," anyway. He didn't want Harry to know what this was doing to his already fragile mental state.
Harry decided to continue, though he could hear the tremors in Draco's voice. He couldn't really stop now, anyway. He carefully put the chastity belt on Draco; it prevented Draco from reaching full hardness, or removing the vibrator, though it still allowed Draco to urinate. "Alright," Harry said, once he'd locked it. "I'd like you to sit up now."
Draco did as ordered in silence, though he winced at some movement of the toy lodged in him. It was clear he would have to move carefully.
"I want you to meet my gaze, Draco." Harry said gently.
Slowly, Draco lifted his head, keeping his expression carefully blank.
Harry smiled. "There we go. Now, I'm going to explain what's going to happen; if you have any questions just ask." He waited for Draco to nod before continuing. "I control the vibrator inside you, and I will turn it on or off when I please. You can end this, but only if you ask to meet me in here. Once here, you will then beg to have it removed and only once both of us have climaxed will I do so. Afterwards, you will have 24 hours recovery time before the next little game."
Draco's eyes widened.
Harry stroked a hand through his hair, hiding a smirk as Draco flinched. He got up and walked to the door. "I'm leaving now. You can stay here as long as you like - nobody else will be able to enter. Your clothes and wand are on the floor beside the bed."

~Two Days Later~

Draco tried to look like he was paying attention to the lesson, as the toy lodged inside him vibrated. It had been on for the past two hours now, and Draco was having a hard time holding back a moan. He could see Harry discreetly watching, trying to hide a smirk.
The bell rang, and Draco jumped; holding back a startled cry of pain and pleasure. He got up carefully once he'd packed his books away, having sent Goyle and Crabbe on to lunch ahead of him. He found Harry stood outside the door waiting for him, his smirk clearly visible now. The vibrator shifted up a notch and Draco gasped, Harry's eyes darkening with lust at this reaction.
"Are you ready to give in?" Harry asked quietly.
Draco merely nodded; he hated giving in, but he could barely cope anymore.
Harry turned the vibrator off, and Draco sighed in relief.
"Go to the room of requirement, strip, and kneel in the centre of the bed. I'll be along in a couple of minutes."
"Do I need to imagine the same room as before?" Draco said softly.
Harry smiled, ecstatic that Draco was already being so submissive. "I've already set the room up - only you and I can enter, so there's no need to worry about others."
Draco nodded; relieved he didn't have to worry about that.
When Harry entered the Room of Requirement, he smiled to find Draco had obeyed his orders exactly. In fact, he had even gone one step further - his head and eyes were lowered, and his wrists were crossed behind his back.
"You have done excellently, Draco. I shall not be too hard on you today."
"Thank you, sir." Draco's voice betrayed his emotion, and Harry became aware that he was crying.
Moving to sit in front of him, Harry asked in shock "Draco, are you crying?"
"No, sir." Draco shook his head obstinately.
Harry frowned, putting a finger under Draco's chin and gently raising his head so their gazes could meet, but Draco would not look at him. There were tears running down his face, and his eyes were red-rimmed.
"Draco, please. Look at me. Tell me why you're crying."
"No!" Draco whispered, sounding desperate; pulling away from Harry.
Harry frowned. Draco froze; knowing that look too well not to think it meant punishment.
"Draco; I promise I am not going to reveal anything to anyone else, and I will not humiliate you with it."
Draco stayed silent for a moment, before saying softly "I can't. It involves... s-ssomeone else."
"Your father?" Harry guessed, frowning.
Draco's eyes widened. "Wh-what?! Wwhy would you say that?"
Harry sighed. "After his little displays over the last few years, it seemed likely he would at least be slightly violent with you. This, I didn't expect." His voice was tight, as he tried to keep his emotions hidden. Harry stood up - walking over to a large wardrobe and retrieving a key. Returning, he handed the key to Draco. "Here," he said softly, "it's the key to the chastity belt. Remove it and the vibrator and get dressed. You're free to leave."
"What? Why? I thought you wanted to make me pay!"
"Draco, I will not traumatise you further. I wanted to give you an escape, but clearly this won't work." Harry stood and walked to the door. "Goodbye, Draco. I'm sorry." He whispered as he left.
Draco stared at the closed door for a moment, then threw the key at it. "I hate you!" He screamed at the door, before his tears escaped; and he curled into a ball on the bed, sobbing.

Outside, Harry leant against the wall and dropped his head into his hands. "What do I do now?" He whispered.