[A/N: so i wanted to write some King Boo X Luigi with a dom/sub dynamic with something that wasn't sexual, so i'm trying to write fluff. Hopefully it's not too weird? It was really hard for me to do this DS without SM, but i tried D: Also light B, just a dog collar and wrist cuffs.

This is actually an edited version to make it a lil more vanilla for this audience. It cuts it down some, but whatever. The original version is on AO3.

Oh, the story's gonna use a human-shaped King Boo w/ masculine pronouns, but i'll try to keep it vague enough so that you can substitute in any version that you want (EXCEPT Booette, bc she's for phobes imo)

TW/CW: dominance/submission, cuddling, kissing]

Here he was, right where he was requested to be. The room was dark, but the light from the candles reflected off of all of the gold and jewels that adorned almost every surface. He was unnerved by this, knowing that places with such limited visibility were always gathering places for unsavory company.

However, he was assured that it would be just the two of them. He was told to leave his baggage at the door so that it wouldn't get in the way. It left him vulnerable, completely open to attacks from the beings that wanted him gone; but the one that wanted him there had asked it of him. His belly trembled as he contemplated doing this, but the idea of giving in to this lent itself to why he was requested. Now that he was here, he hoped that the notion was appreciated.

"I'vd been waiting for you." The low, seductive voice came from nowhere around him. He searched for a sign of the presence, most expecting it to appear somewhere before him.

Luigi sighed out. "I'm… sorry."

A deep purple haze emerged from the darkness, and the voice found a source. "It's about time you showed up. What, did the little pests get to you? Can't you handle a few little ghosts by now?" The mist was taking form as it spoke, but it didn't show its face quite yet.

Luigi breathed deeply. "I was… scared." His words had to be calculated, they must be correct. He needed to use the truth carefully, and any lies even more so.

The shape huffed. "Pathetic. I expected better of you by now." Eyes glared from the depths, piercing so greatly that light seemed to come from them and illuminate the ghost. It raised its arm, holding out something in a tight fist. "Put this on."

Luigi stepped warily forward. He held out both hands underneath the round item, and he tipped his head to ask for it without a word. The beast sneered and dropped it, having decided that throwing it at him or onto the floor would be too kind.

Luigi held the green dog collar in front of himself and examined it and its chain quickly. He opened the buckle, and he touched the leather to his bare neck. He slowly pushed one of the sides so that he could move the buckle to his throat for him to be able to fasten it closed. He looped the tail, but couldn't find the tiny hole for the bar to go through. He swept his fingers along it, finding a few that would keep the collar uncomfortably loose on him. The seconds that were ticking by were threatening, and his anxiety clouded his ability.

King Boo watched him silently. He saw his hands fumble over the metal and the leather, and he saw the panic begin to touch Luigi's face. It was embarrassing.

He stepped forward, looking down at the shorter man. Luigi caught his eyes and cowered below him. He looked away for only a brief moment to see the king's gloved hands move up past his chest. He kept eye contact, and he watched King Boo's gaze fall and return quickly as he fastened the buckle. He swiftly moved his fingers from the metal to the leather, gently slipping them between the collar and the skin of Luigi's neck from the bottom, with scarcely any room between the three. He locked eyes with Luigi again, and emotionlessly yanked him forward to stand up straight. He obeyed with a sharp breath. "Good boy."

King Boo turned his back and stepped to the throne. Luigi stayed in place, waiting for instruction or permission to move. King Boo relaxed himself into the gilded seat, and raised the wrist with the cuff on it. He took the metal chain in his hand and held it taut. He stared the man down and quickly pulled the thread between them, forcing Luigi to stumble. "Down." He pointed to the ground with the cuffed hand as he commanded.

Luigi knelt down to his knees, keeping King Boo in his sight. He saw the same finger motion downward again, and he brought his hands to the floor in front of him.

King Boo moved his arm, but kept his finger pointing down. "Come." Luigi slowly crawled to him, only glancing away from his destination to prevent missteps. He stopped only a couple of feet before King Boo and remained on his hands. He brought his eyes up from the spot that was indicated, hoping that he had done a good job. "Sit." He did so, keeping the tips of his fingers to the floor.

King Boo yanked on the leash and made Luigi jump. He leaned forward, and barely glinted his thumb against Luigi's cheek as his finger traced his jawline. He stopped under his chin and tilted his head less than a centimeter to see all of his face. He glowered, and spoke low. "Very good."

The touch was so gentle, and was so different from the spit of the words and the coldness of the stares. The feeling stabbed up through King Boo's arm, and he considered using the same hand to slap Luigi across the face. It was very tempting, but he wanted to be able to force Luigi into even tougher decisions, so he resisted doing so.

Instead, he gently kissed Luigi on the lips, holding the contact for a few seconds. He only stopped after feeling Luigi's breath against his face, satisfied with the reaction.

King Boo leaned back comfortably in his chair. He rested his head on his cuffed hand, lazily looking Luigi up and down. He was getting bored of giving him directions. "Well? What are you going to do now?"

Luigi considered it for a moment. He crawled up closer, and he rested his chin on King Boo's knee, meeting him with innocent eyes that begged for something more. King Boo felt a tug at his heartstrings, but his face remained unimpressed. About another minute passed silently; Luigi moved his hands to rest them underneath his chin. He watched him with a mixture of unease and dreamy eyes, drinking in all of the details of his face while his heart started beating harder.

"May i speak," he piped, "my Lord?"

"You may."

"You are so beautiful, my Lord…." He paused. "Th-thank you, my King."

King Boo became upset. He prided himself on being hideous and fearsome. He always made it a point to look so horrendous that even other ghosts were terrorized on the spot. Any notion beyond that was an insult, and this man in front of him knew how disrespectful it was. He bared his teeth and growled. "What do you mean?"

Luigi got nervous. He meant what he said, and he knew it was a risky thing, but now he had to explain himself. "Y-your Grace, i am enraptured by your presence. I-it strikes me, it frightens me. You are…" he considered the phrasing; "so thrilling… to me." He breathed heavily, scared that the answer was not satisfactory.

King Boo snarled. He understood what Luigi meant, but he did still want to mess with him while he had him here. He thought about the approach that would get the best reaction.

"INGRATE!" He snapped his jaws at him, scaring Luigi to sit back on his knees and pull his hands close to his body. "I ALLOW YOU TO BE HERE SAFELY AND COMFORTABLY, AND YOU SLAP ME IN THE FACE WITH SUCH INSOLENCE???!!!" He pointed an accusing finger in his face. "I DEMAND THAT YOU APOLOGIZE AT ONCE!!!!"

Luigi yelped and staggered through his body's tremors. "I-i-i deeply apologize, Y-your Gr-gr-grace, My K-king! I-i am sorry for ha-having d-di-disrespected you in s-such a careless way!!" He leaned his upper body against the floor, hands flat beside his shoulders. "I-i hu-humbly beg-g for your for-forgiveness!!!"

King Boo smirked. He always liked Luigi better when he was shaken. He leaned back, enjoying seeing him all over the floor in front of him. He tapped his cheek, considering the things he should have him do next.

"Sit up, already!" Luigi looked up to see King Boo frowning at him again. He pulled his body up so that he was sitting on his knees again. He kept his eyes on him, waiting for whatever was to come. "Goodness, Luigi, you really are pathetic sometimes!"

A pink aura hastened up to him. Luigi followed it with his eyes as it enveloped his wrists. He felt them snap together and become smothered under freezing metal, locking them together in a set of wrist cuffs that were welded together. He was stunned and looked back up to King Boo watching underneath his glowing crown. "It's time that i teach you how to properly treat your Master."

Luigi felt the pink aura tug upwards on his cuffs, pulling him with it. He scrambled himself to his feet, but the cuffs were pulled high up above his head so that it lifted him off of the ground completely. He made little surprised noises before yelping at being swiftly pulled to be face-to-face with King Boo. He grinned mischievously. "First, i'm going to have to wash out that dirty mouth of yours!"

Luigi was raised even higher and swung around to pivot him properly. He expected something rougher, but he was gingerly lowered to be sitting across King Boo's lap. He blinked, then glanced up to his new perch. King Boo was grinning his sharp teeth at him, and leaned his face in a bit to further threaten him. Luigi flinched and tensed as he felt a hand gently wrap around his further shoulder and an arm softly support his back.

He was aware that his body was getting closer to King Boo's, and he submitted to it. He felt a cold hand touch his jaw, caressing his cheek and his chin while King Boo's thumb barely brushed his bottom lip. His breath hitched and he quivered for a moment, finally relaxing under the sweet little touches.

King Boo skirted the skin of his lips against Luigi's. He teased for a moment to make Luigi want this, and to taste his warm breath in the front of his mouth. He pressed their lips lightly once, then pulled back so that they were separate again. Luigi's eyes scanned all over his face. King Boo leaned in again ever so slightly, and Luigi closed his eyes to enjoy the contact. But he didn't get any contact, because King Boo pulled back again. Luigi opened his eyes to see smirking, and King Boo did this feigning once more. Luigi let him do it again, but before King Boo could lean back again, he captured the tempting lips with his own.

King Boo was barely surprised. He smiled and breathed against Luigi's mouth: "so eager, hmm? Hah, how pitiful." He teased only tiny, light kisses for a little while longer until Luigi released a tiny whine. King Boo mocked him. "Ohh, what's the matter??? Is something bothering you, Green Bean???"

Luigi's lip quivered. His eyebrows were pinched up and he really wanted to be kissed, but he had to be good. "N… no King."

King Boo glared but grinned wide. "Are you lying to your Master???" He shook his head a bit. "Tisk tisk, don't you know how to properly behave?"

Luigi cringed. "Y-yes, my King, i did lie to you. I am so, so sorry that i did that, my Lord. I beg for your forgiveness, your Grace."

King Boo chuckled. "My, you really are acting out today. Very well, i suppose we should get to cleaning out your filthy mouth." Luigi gulped, but was very excited. King Boo grinned wide and menacingly.

He lifted his hand from Luigi's shoulder and pulled it to his front. He quickly slipped two fingers between his neck and dog collar again, holding them firmly against Luigi's adams apple and gripping the leather tightly. He snaked his other arm between Luigi's and brought his hand to his cheek, his fingers stretching towards the back of Luigi's head to keep a hold on him. He lifted his leg under Luigi's knees and raised himself up so that he could get exactly the position that he wanted: something that would make Luigi into complete putty in his hands.

This happened in an instant, and King Boo did not hesitate to pull Luigi in close and force their lips together, muffling his little peeps. King Boo thrust his large tongue into his mouth, tasting the whole of his maw with a few quick sweeps. He sucked hard, and he drank up Luigi's moans. Luigi played his dialect against his Master's almost shyly at first, but he was far eager to have such linguistic contact. King Boo dug his knuckles against his voice box to apply pressure, and received a needy peep that tickled his fingers.

King Boo rubbed his freezing tongue against the roof of Luigi's mouth and his teeth. The temperature stabbed at his nerves, but the gentle pain felt so, so good. Luigi gasped and tried to breathe in without having to disconnect, knowing well that King Boo didn't have to worry about something as trivial as air. He ate up how different their mouths felt from each other's, loving how it made even the tiniest sliver of touch into something so enticing. The sensation and emotions tied to it were almost cripplingly addictive, and Luigi thought about it almost every last time he saw King Boo.

King Boo kept Luigi in his grip for a good long while, adoring every little noise that he made. When he was satisfied with where they were, he very slowly dragged his tongue out from inside of him and completely disconnected their faces. King Boo looked lovingly at his darling, and Luigi sighed with a dreamy expression on his face. King Boo removed his fist from his neck, but continued to caress his cheek sweetly. He leaned into it for a moment, then snuggled up close to King Boo, nuzzling into the crook of his neck. King Boo held him close, but kept his contact light, enjoying the feeling of loving and being loved.

King Boo relished his partner being so close to him for a bit. He felt the tiny tremors that happened with every heartbeat, and he let Luigi's warmth cover his whole body. He did love being like this, but…

King Boo stood up suddenly, aggressively pushing Luigi away from him and onto the floor. "Get off of me!!!" He readjusted his clothes and snarled his teeth at the little man looking up at him. "You're so clingy, you pathetic little worm! Have some dignity!!!"

Luigi pulled himself up to sit on his knees. He bowed his head. "Yes, my King, i am sorry." He closed his eyes and waited for anything else that he was asked of.

King Boo hissed. "Disgusting." He snapped his fingers, and Luigi saw his collar and his cuffs evaporate in a quickly dissipating purple haze. He lifted his head and locked eyes with King Boo one more time. He pointed to the door and growled. "Get out of my sight."

Luigi nodded. "Yes, Master." He stood up, and not more than a moment later did King Boo himself disappear in the same purple mist. Luigi dusted himself off and picked up his hat, which had fallen off. He placed it back on his head properly and thought about where he was. His eyes opened wide and darted around the dark room, and he ran off back towards the door to collect his things in case any other ghost also wanted to play with him.