"Okay," San huffed as he set down his duffel bag. "Let's get started."

You stood up from the wooden floor hurriedly, not wanting to upset him further. It creaked beneath you with every step as if it were just as on edge.

San had spent nearly all of yesterday trying to teach you the dance to Wake Up after you missed rehearsal for a brand collaboration shoot. For some reason, it just wasn't clicking with you. Half of the steps you kept forgetting and the ones you did know were of beat.

San started the song and was about to run through it when you blanked out, having already forgotten the intro.

"Were you paying attention at all yesterday?" he scolded with dark circles under his eyes. You'd kept him here almost all night and for what? You hadn't retained a single thing.

"I was! Just some of it isn't what I expected," you argued. "Play the chorus though. I know that at least."

With a disappointed sigh and hand on his hip, San skipped forward and let you do the chorus. He watched you, hips grinding the air, and clicked it off.

"Do it again," he instructed, this time with no music playing.

You did, and San pressed your chest back as you thrust, making the arch deeper. "You were too stiff. It should be a body roll...not a body-seasaw."

"Oh..." you pouted, having done wrong the one thing you'd been confident about.

"Again," he urged, this time allowing music. You listened and then went to your knees for the second one just as he stepped over. You looked up, very aware that you were at eye level with a particular part of him that you had trained yourself to ignore. "Good job," he praised with a small clap.

"While we're working on thrusts, take my hand," he pulled you to stand and kept holding it while facing apart from you. You'd found out about this particular move yesterday and your cheeks blushed just thinking about it.

"Do we have to do this? It's...it makes me feel weird," you said just as the music started.

"It's fine. Just follow my lead," he instructed as he thrust towards you, his hips rolling into yours which had you dropping his hand and backing away awkwardly.

"(Y/n)," San snatched it back. "It's just a dance."

"Fine," you huffed, this time putting in minimum effort which made San roll his eyes. You obviously lacked a certain professionalism that he had which made him not care about how sexual all this was.

It didn't help that pre-debut you'd had a massive crush on him. Ultimately, you shoved it down, because if anything went wrong it would fuck it all up for everyone.

"Why are you struggling with this?" he rolled his eyes. "Here," he dropped your hand. "Do it by yourself, and I'll watch."

This was slightly less awkward than going straight into thrusting him. You held your hand up and mimicked the movement for him only for San to shake his head and circle you.

You waited for him to ridicule you...call you a horrible dancer. Instead, he pressed himself flat against the back of you and ground into your ass.

"S-San," you tried to pull away but he pressed his hand on your stomach. "What are you doing?"

"Just follow my hips. I'm showing you how to dance," he breathed against your ear.

Instinctively, you moved with him, unable to ignore his cock against your ass or the way his hand moved down an inch each time you practiced until it hit the waist of your jeans.

Good, you thought. The jeans will give his hand something to stabilize on.

They didn't though, he kept moving as your heart pounded and breathing became shallow. You were so nervous he'd be able to tell how much you wanted him...so nervous that he would embarrass you. You thought you were going to be sick when his palm finally met your dick.

"You're hard," he rasped.

"I-I..." you stuttered, trying to find an excuse when San pressed his lips against your neck.

"Good," he groaned and wrapped his hand around the outline of your dick.

"San," you moaned, head dropping back to his shoulder. "What are you..."

"This dance is sexy, (Y/n). You can't learn it because it's obvious we have some tension to be dealt with."

"Obvious?" you fretted. How long had he known?

"You're hard..." he muttered as he ground against you again. "I'm hard..." he confessed. "It'll be less awkward if we just fuck, won't it, baby?"

His thumb rode up your length as he spoke, and the only response you could give was a mangled, "Mhm."

Right away he undid your jeans and lowered the zipper, giving your erection room to expand further. When he pressed against it this time, you nearly collapsed, stomach aching in need to fill or be filled by him.

"I've never done this before," you confessed as San stroked you.

His warm lips left your neck briefly to murmur, "No wonder you're so uncomfortable with the dance."

Your cheeks burned in embarrassment. You'd wanted to first fuck someone you really liked but for as long as you could remember, you had only liked San.

"Don't worry," he cooed while putting his hand down your boxers as he ground against your ass. "I've got you."

Your eyes fluttered shut and you just let yourself feel. San's warm hand knew exactly how to touch you, being lighter the closer he got to your tip, his thumb grazing the slit so softly that your knees nearly buckled.

"Has anyone ever touched you like this?" he groaned against your shoulder.

"Y-yes," you confessed as you looped your arm around his neck.

"Who?" he asked, his voice deep with jealousy that you hadn't expected.

"Wooyoung," you confessed through a whimper as he bit down on your shoulder. "Once when we were bored."

"Mmm," San groaned and pushed your pants completely off before pulling back.

You turned around, worried that you'd somehow pissed him off, only to find him removing his sweatpants.

"What are you?" he asked while letting them fall and exposing himself to you.

You couldn't help but blush and lick your lips at the sight. The hairs at his base were trimmed, and he had his hand wrapped around himself while he stared at you. San looked proud to be naked, whereas you were doing your best to pretend you weren't.

"What are you?" he repeated, his voice dripping in need.

"Yours," you whispered, mind too fucked out to process what he meant.

San chuckled and stepped forward to squeeze your cheeks. He looked like he wanted to speak, maybe to clarify his words, but as he gazed into your eyes the motivation to correct you was overcome by his desire to feel your lips on his.

San kissed you.

His warm and soft lips pressed against yours firmly as a whimper left his throat. His tongue swiped across your bottom lip, asking for entrance that you permitted him while pulling him closer. His cock stabbed your thigh, and you whined at the reminder that you were both naked. Your stomach was in flips, your heart beating so fast that you couldn't fathom anything feeling better than this...until San began to jerk you off at the same time. Your jaw dropped open in shock, and you opened your eyes to meet his.

"That feel good, baby?" he taunted, watching your every move.

You nodded and gripped his shoulders to remain upright.

"I need an answer," he moaned desperately. He wanted this to begin as badly as you did. "Are you a top or a bottom?"

"I don't know," you confessed.

"Let's find out," he whispered before kissing you softly and fisting your hair.

You breathed his name and felt a sudden pressure on your shoulder as San pushed you down. Eventually, you were on your knees in front of him, looking up through your lashes just as you'd been earlier while practicing...only this time he was naked.

"Take your shirt off..." San ordered while tearing off his own. "...In case I make a mess."

Fuck.

The very idea of San 'making a mess' on you made you want to cum. In fact, you'd already cum to that exact idea almost every night for the last 3 years.

You took your shirt off and hummed when his fingers ran through your hair. "Good boy," he whispered.

Fuck.

It was as though he'd been in your brain watching your imaginings of him. ...Or maybe on the other side of the wall.

"Have you ever sucked a dick before, baby?" he asked, not an ounce of judgment in his voice.

"Once," you admitted. "When Wooyoung and I were bored."

San chuckled and shook his head. "We'll have to get you bored more often it seems."

You didn't know what to say, but your face suddenly felt very hot. If San noticed how red you'd gotten, he said nothing and instead began guiding your face toward his cock. You partially opened your mouth to take him, unsure if you could.

"You want to be good in this dance don't you, baby?" San groaned. You nodded and looked up at him, hoping he saw how much you wanted to please him...in the dance and in other ways. "Open wide then," he ordered.

You listened and let San push his cock just beyond your lips...just the tip. Naturally, your tongue flicked through his slit and you tried to go deeper on him.

"No," he tugged your head back. "This dance is about thrusting. I'm going to fuck your mouth, and then let you choose how you practice...if you do well for me. Understood?"

You nodded but San pulled your hair harder. "Verbal response, baby. Do you understand?"

"Yes," you squeaked out, and prepared for him to sink in again. When he did, he wasn't as careful this time. He fucked as deep as his cock could go, hitting the back of your throat. You gripped his thighs to steady yourself, letting tears form in your eyes as you looked up at him.

"God you're taking me so good," he grunted as he set a rhythm. He went slow enough while pulling out to give you time to breathe but sharp enough going in that you gagged each time.

"You look fucking hot on your knees like that, baby," he groaned.

You whimpered around his cock, having wanted to hear him say that since you met him. And with how pretty he looked with his lips parted and his voice breathy, you'd never be able to masturbate to those fake images anymore; only this moment would suffice.

Your tongue began to add pressure to the underside of his cock whenever you sucked. You were so desperate to please him that you even moved your hands to palm his ass cheeks instead.

"Spank me," he pleaded.

Your eyes went wide in surprise, but San asked again, so you listened, sharply bringing your hand down on his skin, wishing you could've watched the red mark form.

"Oh fuck yes," he grunted, his pace faltering. "Again."

You listened, hitting him so hard this time that your palm stung. His cock twitched in your mouth and you knew he was close, knew this was a side of San your daydreams had never predicted.

You spanked him again, feeling proud of yourself when San stilled and began to come down your throat. His cock spurt in thick heavy ropes of cum, a taste so sweet you wouldn't soon forget it. You also wouldn't forget his moans as he came or the expression of pure ecstasy. His jaw dropped completely when he finished and every sound came out as breathy and deep as if he had no energy left for anything other than breathing. You took a memory screenshot and filed it away for later.

"God that was good," he pulled out and dropped to his knees across from you. "Now..." he trailed off as he cupped your cheek, brushing his thumb back and forth gently. You melted into him, wanting whatever affection he'd give you. "...It's your turn to practice."

"Practice?" your eyes snapped open.

"Thrusting, baby," he reminded you in a soft voice.

"Oh..." Your heart beat so loudly that you wondered if he could hear it. You felt a heart attack incoming at the idea of thrusting anywhere in or against San.

"Here..." he turned around and arched his back, exposing his ass to you. "I'll choose for you."

You couldn't believe it. Choi San was on all fours in front of you waving his perfectly round ass in the air...his perfectly round ass that had a perfectly red handprint on the left cheek. But what made you even more turned on was the sight of a shiny little jewel in his ass.

"What's this?" you asked, tapping the plug that was covering his hole. "Were you dancing with this the whole time?"

"I was planning to go see if Wooyoung was bored after this," he admitted.

"Fuck," you said out loud this time as you reached for it, fucking San with the toy that had him all stretched out and ready for you. He moaned into the wooden floor with beads of sweat dripping off his forehead.

"P-please," he begged. There was so much need in his voice that you wondered if you'd imagined it.

"Arch higher," you told him, watching as he listened right away. You pulled the toy out, letting it fall to the ground as you spread his cheeks to see his desperate little hole. "Higher," you instructed just to see if he'd listen as you spat on your cock to prepare yourself.

He did. His cheek was sunk into the ground with his arms stretched out in front of him. "Good boy," you mimicked him from earlier as you sank in.

The noise San made when you breached him would ring in your ears forever. It was raspy and high-pitched, his cool persona replaced in one whine.

You'd never felt anything as amazing as his ass tightening around your cock. He took you easily enough, but it was like his body wanted yours to stay inside him. But this was about the thrusting dance...not a cock warming one.

So you pulled out and rammed back into him sharply.

"Roll," San whimpered. "Roll your body into me, baby. Like the dance."

Even while filled with your cock, he was still giving lessons.

You listened though, and slid your cock back and forth through him as he tried to grip the ungrippable ground. San's cock grew harder again, and you realized you were pretty fucking good at fucking him.

"Touch yourself Sannie," you ordered, because you wanted to watch. San listened, and his bicep flexed as he worked, giving you something else to look at.

"Wanna watch you cum again," you confessed with a spanking to his right cheek simply because you wanted to watch the red handprint form. It was everything you'd ever wanted.

"Fill me, baby," he begged.

"I want you to cum in the hand and rub it all over your chest," you imagined frantically as your pace increased.

"Wanna lick it off of you," you added through desperate rasps.

"Fuck," San groaned at the idea as he worked harder.

"Wanna kiss you while my lips taste like your cum."

"Oh god," San cried out, body tensing around your cock.

"Gonna fuck you later instead of letting Wooyoung," you spanked him harshly this time, punishing him for using someone besides you to get off.

"Please," he whined. "Again."

You smacked his ass so hard that he fell forward, his chest hitting the ground with a thud. His body shook as he came, and you fucked him relentlessly into the ground through his pretty cries until finally...

"Be a good boy and finish," he instructed in the highest voice yet, knowing it was exactly what you needed.

So you did. You spilled into San and fell to his back as you finished. You kissed his neck and shoulder and squeezed yourself to him. It was better than you would've ever imagined, and you pulled out only to check on him.

San turned over with a smile, and you couldn't help but laugh. He looked as perfect as always if not more so...

And then he held up his hand...which he'd caught his cum in just as you had asked him to. "Better get to work, baby. There's a mess," he muttered just before slathering his cum all across his chest.