"Yeah," Deku murmured, maneuvering a pinky just enough to hook around Katsuki's only for a moment. The touch lingered for a moment before Katsuki pulled ahead again, this time heading toward a door on the other side of the room. Deku caught up to his side.

"Want to feel more?"

Katsuki clearly wasn't waiting for an answer as he led the two of them to the next room, but he looked at Deku all the same.

"Yes," Deku hissed. He didn't even care they were skipping one of the displays, he was just eager to be captive to the sensation of Katsuki's skin on his.

Katsuki carefully pushed the door open and ushered Deku through, into yet another dark room, slipping it shut behind them.

Except this room wasn't quite so dark. Deku tried to figure out what exactly he was looking at, breath caught in his throat.

Lights levitated about the room, adrift like floating lanterns. High and low, big and small, scattered about at random at every height in cool tones, bright enough to see but casting very little light.

String instruments sung the soundtrack to his wonder as he stared.

Slow, long and deep notes, the occasional high note plucking at his spine.

It was disorienting, and if it weren't for another path of floor lights and Katsuki's silhouette, he wouldn't have known where to walk. They were especially important in this room.

The lanterns commanded his attention with so much authority, only more light could steal it away... aside from Katsuki. He moved in close, the lit path just wide enough for him to walk at the man's side, their pace exaggeratedly slow, the backs of Katsuki's fingers at his thigh.

Their proximity to the lights now afforded Deku a closer look, which revealed that the lanterns were suspended by near invisible strings, hanging everywhere in the room like vines, save for over the carefully planned paths designated by the floor lights.

Deku had never seen anything like it before. It took him a long moment to notice Katsuki's eyes glued to his face, an intense look on the man's face as he drank in Deku's every expression.

He could only guess how he looked, and he imagined it had been embarrassing.

Katsuki didn't mock him, just spoke in that soft, rasping voice, sliding his hand from Deku's thigh up to his hip. "Pretty, huh?"

It felt like a compliment in his ears, ambiguous words referring to the lights, but all the while Katsuki's eyes burned into Deku's face...

All the while Katsuki's hand squeezed at Deku's hip, taking extra liberties in the shroud of the darkness and the shield of the hanging lights.

Katsuki meant him, didn't he?

Deku could only imagine his own face right now, flushed cheeks and half-lidded eyes.

Was this what Katsuki found so pretty? Deku deconstructing before his eyes, under near nothing touches and suggestive whispers? In a museum, no less?

Katsuki's face told him yes, the meager light from the lanterns reflecting in his eyes to reveal his own dilated pupils.

"You think so?" Deku replied, meeting Katsuki's intense gaze with his own hazy one.

Katsuki's lips quirked up, and the hand on his hip dipped lower to graze the top of Deku's ass. His lips dropped open in a tiny gasp.

"Fuck, yeah," Katsuki answered, his voice gravel.

That hand felt so good on his ass... just the warmth, the touch of it... the knowledge that it was there. He wanted more.

The sound of footsteps approaching behind them had Katsuki's hand removing from his ass. Deku was both grateful and disappointed.

He felt better when the same hand was then placed on Deku's waist, a strong arm wrapped across his back, leading him further through the path. The gesture had their sides pressed close together, the warmth of Katsuki's body against his making his insides even warmer.

Katsuki wasn't going as slow anymore, perhaps because of the people behind them. Deku didn't mind that they didn't have as many idle moments with the man's body so close to his own. It sent ever-present jolts of excitement through him, a constant thrumming of pleasurable nerves.

Katsuki brought the two of them to the next door, releasing Deku to carefully push it open just like the last.

When he walked through, the first thing he noticed was how it felt chillier, even in his sweater, and it was even darker.

He couldn't even register what he was looking at until Katsuki had shut the door behind him and put his arm back around him.

They were in a cave. Well, an imitation cave. A really good imitation cave.

Light reflected off the moisture on the jagged rock walls, the only way he was even able to see them. It looked damp in there, even smelled kind of damp, and the /sounds/ - there was so much resonance, just like a real cave.

All of the sounds were so high, similar to music he might've heard in a sci-fi or fantasy movie. It sounded so alien, so mystifying. He shivered, and the arm Katsuki had around him tightened.

Their shared warmth comforted him even more in the new cave room.

It didn't quite feel creepy in there... more curious, like he had fallen into the unknown. Katsuki guided them around a curve, and Deku could now make out a meager green light emitting from something ahead.

Deku was grateful the cave had even flooring as they approached.

"Wow," Deku breathed as they came upon the light source. It was a body of water the light was coming up from. "How deep do you think it goes?"

"Can't be too deep," Katsuki said, chin buried in Deku's hair. "It's not a real cave, remember?"

Deku hummed.

It was kind of hard to remember that, what with the ambience and how realistic everything looked. He reached a finger out to touch a damp rock, surprised when he pulled away and it was dry. He rubbed the finger over it again. Glossy. So that was why it looked wet.

"Can we look closer at the water?" Deku asked.

"Sure," Katsuki said, "Just watch your step." Deku noticed then that the path became more rugged and uneven the closer you got to the pool, probably to deter people from doing anything foolish.

When the stone floor rose higher and became even more uneven, Katsuki moved both hands to Deku's waist, helping lift him up and keep him steady. Katsuki followed up after him, wrapping that arm back around his waist as the two stared into the water.

They couldn't see the source of the green light, but it illuminated the many things within the pool. They small things moved about quickly, while the bigger ones seemed to float along lazily, as if too tired to bother with anything more.

"Kacchan!" Deku said, "There are fish!"

"Shh," Katsuki said, brushing a thumb over Deku's bottom lip. "Remember to whisper, baby boy."

In his excitement, he'd forgotten himself. A part of him wanted to pout, annoyed at being scolded, but another part, a /lower/ part, felt hot from Katsuki's reminder.

"But you're right," Katsuki continued, "There are fish. See those ones there?" Katsuki pointed at a group of fish. They were smaller than the other ones, not quite the smallest. "Those are full grown cavefish."

"Really?" Deku whispered. "They look like babies."

"They're kinda like you then, huh?" he teased, and Deku really did pout this time.

"Well, you're like that one," Deku said, pointing to one of the biggest fish, a white one that seemed to have no eyes. It was nuzzling up at the bottom of another fish.

"Why's that, Deku?" Katsuki asked, lips brushing the smaller man's ear again, though this time one couldn't even argue it was accidental. "You want me burying my face in your ass like that? Yeah?"

Deku gasped, lips parting open, hands grasping Katsuki's shirt for balance.

If it wasn't for Katsuki's other arm going around him, Deku certainly would've gone off balance and fallen over, either into the pond or back down to the path where they were meant to be.

Katsuki chuckled, both hands skimming down Deku's back to rest on either ass cheek.

"Clumsy, aren't you? You looked the type," Katsuki laughed, breath warm on Deku's face. "That's all right. Kacchan's got you."

Fuck. When he talked like that...

Voices reverberated off the cave walls, and Katsuki quickly maneuvered them down from the pond area to the floor.

As the people came around the bend, Katsuki dragged Deku into a crevice, unnoticed and hidden in the darkness of the cave. In their rush, Deku hadn't noticed the change in the sounds, how it'd faded out from a soundtrack of curiosity and wonder to something eerie.

The noises were still high pitched, but in a grating way, like nails on a chalkboard... like something he'd heard in a horror move he'd been forced to watch a long time ago. He didn't sleep well for a long time after that.

"Spooky, huh?" Katsuki asked.

Deku noticed just how close they were together, their hips pressed flushed together, lower bellies touching. "Yeah," Deku said.

There was so little light where they were hiding, he could just barely make out Katsuki's silhouette. He couldn't see those red eyes in the darkness.

But Deku could imagine them, the man's gaze trained on his face, that hungry look. Was he smirking as he felt Deku's lower area reacting to their proximity, to his words?

Was he turned on, too? Katsuki was big enough that Deku could probably feel him regardless of his hardness.

Deku could certainly feel him now, their cocks separated only by the fabric between them, Katsuki's dwarfing Deku's own, even though Deku's was plumping up.

"Waterphone," Katsuki said.

"Wha--?"

Deku didn't get to finish asking before his lips were covered.

Soft but firm lips now covered his own. It was a slow kiss, but it was intense... and demanding. Katsuki was so obviously the leader in all of this, in charge, and Deku was pliant under him.

He let Katsuki's hands run over his back, hips, ass, groping and squeezing.

Katsuki pressed even closer to him, their chests touching, and Deku's nipples felt sensitive against the fabric of his knit sweater. He tried to stay quiet, but he couldn't stop a high-pitched whimper from escaping him when Katsuki gripped his ass especially hard.

Deku could only hope that if anyone heard it, they confused it for the music, or whatever the hell it was supposed to be. It was hard to think about that with Katsuki's lips and hands working him over. Katsuki's tongue bid entrance into Deku's mouth, brushing his bottom lip.

Deku opened up to him so eagerly, Katsuki's tongue overtaking his own. Everything about the man was so strong, so dominating. Deku's hands went up to Katsuki's chest, taking the opportunity to feel up his hard muscles. So big and defined... it made him dizzy.

"Kah… Kacchan," Deku moaned into the man's mouth, trying to be as quiet as possible. It was too difficult, and his little hips were bucking against Katsuki's now, his smaller cock grinding into the man's harder one, separated by their clothes.

"So needy for me."

A hand pushed up under Deku's sweater from the back, fingers slipping under the waistband of the man's leggings to slip them down slightly. The same hand wound around to the front, another finger hooking into the waistband of Deku's thong to pull.

"No, no- oh," Deku protested.

The smaller man's modest cock popped free, still hidden under his billowy sweater along with Katsuki's hand. Before he could say anything else, the hand was wrapped around his member, shielding it from the cold air and slowly pumping him.

"Oh, Kacchan, this--," Deku hiccoughed.

"We're gonna get in-in trouble." Deku was getting teary. Fuck, he couldn't help it when it felt so good.

"Not if you keep those pretty sounds under wraps," Katsuki said, pressing a wet kiss to the corner of Deku's mouth.

Deku heard the sound of a belt, then a zipper.

Then he felt it, the slap of Katsuki's thick cock against his belly as the man slipped it under Deku's sweater to join his own. It was so /hot/ against his skin. He could've sworn it was burning him.

Deku brought a hand up to his mouth, covering it to stifle his noises.

"That's a good boy," Katsuki purred, lining his cock up against Deku's. Seeing it in the pictures and video messages was one thing, but feeling it against his skin, against his own penis was an entirely different thing.

Katsuki was /massive/.

Deku couldn't see it in the dark to truly understand the scale of it, but the sensation of it against his skin, the thickness and the length, all told him that it would be a humiliating sight to see their two members lined up next to each other.

Humiliating, and arousing.

Shit, it was so, so hot, knowing how much bigger Katsuki was. He was grateful for the hand muffling his noises, and for his absolute horniness dulling his anxiety at being discovered.

"That feels nice, huh?" Katsuki said, holding their two pricks together with one hand.

The fist couldn't quite close around them due to Katsuki's girth, but it still felt amazing as the hand slid up and down, up and down, slowly and torturously, the fingers brushing up and over Deku's cockhead. "Such a big fat cock up against your cocklet, huh?"

Deku whimpered. It was cold in the room, but Katsuki had him feeling too hot, helpless under the man's touches. He needed... needed..

"Embarrassing," Katsuki mocked as he stroked them, voice low for Deku's ears only. "But you /like/ being embarrassed, don't you, Deku?"