A/N: continuing with part B ^^
Junsu slowly started to stroke Yunho. Yunho was trying his best not to move, but it was increasingly becoming more difficult as Junsu found an even rhythm to follow. Sweat was gathering in Yunho’s body from the pleasure Junsu was creating and a loud moan was torn from his throat when Junsu circled his thumb around the head of his cock, spreading the liquid escaping it and distributing it around to create more delicious friction.
“Please…” Yunho breathlessly begged, hoping that if he begged verbally something more would happen even if he didn’t know what. He couldn’t take the sweet torture.
Junsu snapped out of the trance he was in when he when he heard Yunho’s desperate plea and felt his hard cock twitch within his pants. He loved the way Yunho felt against his hand, silky and hard, and was enjoying taking his time. He let go of Yunho’s cock and felt him tremble when cool air hit him. He kneeled down and parted yunho’s cheeks. The first touch of his tongue on the tight entrance had Yunho collapsing onto the desk with a long moan, trembling slightly, which helped Junsu access the rosebud better. He didn’t carry lube with him, therefore this was the only way to lubricate Yunho before he actually penetrated him. He circled the clenched hole slowly, feeling it clench and unclench on his tongue from the outside. He licked one of his fingers, coating it generously with saliva, and slowly penetrated Yunho with it. Yunho squirmed a little at the intrusion, but otherwise didn’t voice an objection.
Junsu kept licking around his finger that was rhythmically pushing in and out of Yunho’s hole, slowly increasing his speed. Yunho was back to moaning and panting, slowly starting to thrust backwards into Junsu’s finger and mouth. Junsu didn’t bother telling him to stay still, he was concentrated on his task of lubricating Yunho. He kept alternating with rewetting his finger and thrusting it back inside and slowly started to add a second finger. Yunho stilled when the second finger made its way in. It burned a little, but then Junsu crooked his fingers in a way that stimulated his prostate and he all but forgot the burn.
Junsu started to thrust the two fingers in gently, making sure to stimulate Yunho prostate to lessen the pain, and occasionally spitting on his fingers before they made their way back into Yunho. When he added a third finger Yunho cried out in pain, automatically tensing at the intrusion.
“Shh, it’s okay Yunho. Just relax,” Junsu told Yunho.
Yunho panted deeply, trying to relax but finding that he couldn’t. Junsu decided to help him by grabbing his erection again and circling the head with his thumb, especially the sensitive area underneath the head. Yunho moaned again and started to relax, allowing Junsu to move more freely within him. This went on for a few more thrusts, Junsu occasionally spitting on the thrusting fingers, until Junsu thought Yunho as close to ready as he’d ever be.
He wanted to see his mate’s face fall apart, so he decided to turn Yunho over.
“Lie down on the desk,” he commanded.
Yunho shakily picked his upper body from the desk and turned around. He got up onto the desk and lied down as instructed; meanwhile Junsu was getting out of his clothes. Once done with his clothes he helped Yunho into position by spreading his legs and standing between them.
“I’m sorry, but it’s going to hurt you. I didn’t bring any lube, so-” Junsu was interrupted by Yunho.
“I have lube in my pants,” Yunho said, he was after all trying to get Junsu and he didn’t want to be uncomfortable.
Junsu smirked as he searched Yunho’s pants for said lube. At least it was one less thing he needed to worry about. He coated his cock with it liberally and dropped the tube on the floor. To distract Yunho from the initial pain he beckoned him to partially sit up for a kiss.
Yunho felt dizzy when his lips touched Junsu’s again. There was something about Junsu’s kiss that turned his mind completely blank and that turned his body on fire.
Junsu positioned himself at the entrance and slowly went in. Yunho broke the kiss as he tensed again, whimpering slightly at the pain. He was distracted from the pain when Junsu grabbed a hold of him and stroked him slowly while his other hand brushed his side soothingly. As soon as the tension eased Junsu started rocking his hips slowly.
Soon Yunho joined in the rocking. Groans and moans echoed in the empty classroom. Junsu grabbed Yunho’s hips, he’d need the grip to go deeper since he’d been thrusting shallowly. As Yunho went forward so did Junsu and the grasp of Yunho’s hips plus the forward momentum helped Junsu all the way into Yunho’s body. Yunho yelled in pain, finger nails digging into Junsu’s shoulder from the blinding pain he was experiencing. Junsu stopped moving, Yunho's tight body and exposed neck were really tempting his control. He groaned when he felt blood seep from the crescent moons Yunho created with his nails. Again he grabbed a hold of Yunho’s cock and stoked him until Yunho unclenched a little so that he could move again. He barely pulled out when he moved in again and started sucking Yunho’s neck and chest, working his way to one of his nipples, while still stroking him. Soon Yunho was participating in the slow rhythm Junsu created and slowly started to speed up as he felt the suction Junsu had on his nipple.
“Uhhh…ah…ummm…” was heard from Yunho, alternating between skin slaps and the deep groans Junsu was emitting.
Junsu could feel his canine’s extending the closer he got to his climax. He grabbed Yunho’s hips harshly with both hands as he sped up his speed. All Yunho could do was wrap his legs and arms around Junsu and hold on tight as his prostrate was abused with every thrust Junsu made.
Junsu made an animalistic growl as he saw Yunho’s exposed neck. His eyes had gone red and his teeth were fully extended. He felt Yunho tighten around him and knew now was the time. He grabbed a hold of Yunho’s hair with one hand and tilted his neck further back and bit down hard.
Yunho tensed all around, eyes rolling to the back of his head, and let out a scream as pleasure flooded him everywhere.
Junsu moaned deeply and drank the blood his mate offered him. Feeling Yunho’s pleasure sent him over the edge as well and his eyes rolled to the back of his head as he released himself into his mate.
Once he had his fill he licked the spot he bit and smiled at his clearly defined mark. Yunho lied limply in his arms, breaths deep and body still shaking sporadically from the aftershocks of his orgasm. He retracted his canines and his eyes returned to the normal shade of brown he had before. He kissed his mate softly on the lips and gently placed him on the desk again. He withdrew himself from Yunho and noticed a fair amount of blood seep out with his cum.
He hadn’t turned him yet, but he was his Master now. He’d just wait for the right moment to fully claim his mate… for now this was enough.