"Oh! Well, uh, I didn't ever think you'd ask me something like that…" Alvin muttered, looking back towards the door. "Simon you know you don't-"

Simon cupped Alvin's cheek. "Alvin. Tell me." He said firmly.

"You won't like it…"

"There's a lot of things I don't like right now. But I do want to help you."

Alvin bit down on his lip, glancing away again. Simon wasn't used to seeing him so shy… though given the circumstance, he could understand.
"Can… Can I undress you?" Alvin asked, finally making eye contact again. "I don't know if you're dom or sub, but I just really want to see you bare."

"Alvin, we've bathed together before. What haven't you seen?" Simon asked. 'I can't believe I'm finally doing this…' he climbed off of the bed, standing in front of Alvin, trying his best to look patient all the while.

Quietly, Alvin reached out to him. His paws were visibly shaking a little as they got closer and closer. As soon as he made contact with Simon, he tensed up, immediately looking up at his little brother's face. When he saw that Simon hadn't gotten mad, Alvin breathed a sigh of relief. "Simon I…"

"Shh. Just... keep going." Simon insisted. He bit his lip a little, though, keeping his eyes on the far wall. Alvin's touch was… well, gentle. Hesitant, of course. As weird as this sort of touching was, Simon found it to be rather soothing as well. As Alvin's hands gripped into his shirt, he let out his own sigh, closing his eyes. His sweater was being lifted up, and Alvin had let out a little coo when his belly was exposed.

"I know I've seen you… but not lately. Not like this." Alvin said as he got Simon's shirt up to his chest. He leaned forward, pressing his nose up against Simon's chest. He took in a deep sniff, savoring Simon's scent. The faintest hint of musk was in his fur, and he could still smell the soap he used earlier. There was a bit of sweat in there too. Alvin's paws rested on Simon's hips, grasping at the hem of his blue pants as he nuzzled Simon, now kissing the spot. "A-Are you really sure this is okay?"

"If you ask again, I'm going to stop everything right now." Simon said. He kept his tone gentle, but made sure there was purpose in his tone, meaning every word. He finished the job of taking off his shirt, tossing it on his bed.

Alvin just nodded his head, his blush nice and dark as he kissed Simon's chest again, moving his paws up to rub the fur there, soon finding Simon's nipples and pressing his thumbs against them. "Simon, is it bad that… that I want to be on top?" He asked timidly.

"It's fine, Alvin. You know, I'm not used to you being so…" he bit his lip, looking to Alvin's face again. "Just keep doing whatever you need to. Weird as it may be…" He had to admit, all this attention had him feeling strangely… good. He moved his hands up, lightly patting Alvin's head. "I'm not going to get mad at you, Alvin. I promise."

A whine came from Alvin, who rested his head against Simon's chest. "Thanks, bro…"

"Don't cry either." Simon insisted, raising up Alvin's head. "I'm gonna lay down now, and you're going to do whatever feels right. Understand?"

Alvin wiped his eyes, nodding his head a little as he pulled back, now starting to undress himself. While he did, Simon laid out on his back, sighing as he watched Alvin. His shirt was gone within seconds, and his pants followed soon after, leaving him in nothing but those briefs of his. Simon found himself blushing, and quickly looked away.

"Okay… pants now." He told Simon. Alvin started pulling the garment down, his heart beating like mad as he did. 'Finally… I can't believe it…' he thought. Seeing the edges of Simon's underwear was one thing, but as soon as he saw Simon's bulge his breathing quickened. "Simon…" he panted, leaning forward to give that bulge a kiss, yanking Simon's pants down the rest of the way.

"Heh… you sure you want to top?" Simon asked, his bulge throbbing slightly against Alvin's lips. "Everything you've done so far says otherwise…"

"Y-Yes I do! I just… I wanna take in all of you." Alvin muttered. Simon's build may have been mostly lithe, but without the clothes hiding everything, he could actually see he had nice thighs. A little bit plump, but nothing like what he expected Theodore to have, or even his own to some degree. Alvin then started at Simon's underwear, looking at his face once again. "Can you, uh…"

Simon nodded, raising up his hips a little. He tensed up as his briefs were pulled down, but otherwise kept himself calm. There was a slight draft in the room that made him tremble. That, or maybe Alvin's stare filling with lust just got to him.
Alvin’s paw was shaking as he reached forward, taking hold of Simon's flaccid dick. He finally had it. Simon, fully revealed, throbbing in his hand. He couldn't help but smile at that, his thumb pressed slightly to the underside of Simon's shaft. As he stroked it, he couldn't help but lean in and kiss it again, rubbing the head up against his cheek. "Oh, Simon… You have no idea how much I wanted this."

"Something tells me I can guess." Simon muttered, arching up his back a little as he felt himself hardening in Alvin's grip. Tight, yet soft. Firm, and yet gentle. The stroking wasn't too bad neither. It felt different than his own paw. He couldn't explain it, but, just something about the way Alvin did it felt… almost better.

Alvin kept on, his hand pumping away on Simon's dick, watching it in excitement as it got closer to his full length. "W-Wow Si… I didn't think you'd be like this… what is that, five inches?" Alvin asked, lowering his head so he could give both of Simon's balls a kiss.

"Hmph. Six and a half, actually. It's almost there."

"Wow…" Alvin released Simon's cock, both hands gripping into his thighs before he raised up Simon's legs. "Okay Si, I'm gonna loosen you up now."

"You don't have to tell me everything you're going to do, Alvin… but thanks for the consideration." Simon said, reaching down to hold up his legs instead. He was breathing faster now, just thinking about it. Alvin managed to get him hard, and he even felt some pre working its way out of him. And now he was-

"A-Aahh! Hey!"

Alvin's nose was cold. And it was between his butt cheeks now, along with the rest of his short muzzle. Alvin was taking in sniffs again and again, and the feeling made Simon's toes curl tight. He tensed up again, letting out a groan as he finally felt Alvin's warm, wet tongue sliding along his crack, stopping rather close to his hole. He didn't expect it to feel good… "A-Alvin…"

No response. Alvin grunted himself, his eyes closing as he briskly ran his tongue over Simon's rim. It was such a taste, a sort of musky flavor he couldn't fully place. But it was all Simon's, and that's what mattered. Alvin licked again and again, savoring every moment he had. Surely he had fallen asleep at some time, and this was all a wet dream. One that he never wanted to end. He leaned into his licks now, fully pressing his face between Simon's butt cheeks, an aroused growl coming from him as he started to push his tongue inside.

Of course the tightness fought against him, but he wiggled his tongue on it more and more anyway. His moans, Simon's moans, Alvin shook his hips some before he finally managed to get his tongue inside, causing Simon to get louder.
"Nnnngh, A-Alvin…" Simon was trembling all over. His shaft was pulsing like mad, precum dripping on his lower belly as he squirmed. "You… enjoying yourself down there?"

"Mmhm~ mrrr!" Alvin answered, tightening his grip on Simon's waist, yanking him closer so the rest of his tongue could slide inside. Simon sure wasn't lying… That dick of his definitely looked to be as big as he claimed. It was a little bigger than his own… much better than what he expected. He pulled back slowly, a slim bridge of his spit connecting his tongue to Simon's twitching hole. "You know I like it… So much~"

Simon groaned, parting his legs enough so he could see Alvin again. "Not something I expected… I"m sure it's loose enough by now."

Alvin shook his head, raising Simon's lower half a little higher. "No no no. Not yet, bro… I gotta be able to fit inside of you, and my tongue's only doing so much." he said, working his tongue right back into Simon, shoving it as deep inside as he could manage to. He felt every bit of those inner walls as they squeezed against his tongue. Simon groaned and strained, but Alvin pushed forward again. For the briefest moment, his tongue brushed against a bump. And when he did, Simon practically screamed out loud at the top of his voice.

It was so loud, Alvin immediately pulled away from him, his eyes now wide in worry. "O-Oh fuck, oh fuck! Simon, I'm sooo sorry, I didn't mean to hurt you!" He quickly said.

"Hah… hn… hnnn…" Simon's blush was as strong as could be. Didn't Alvin know what he did…? "No… it didn't hurt, Alvin. What makes you think I'm hurt?"

"Then why the hell did you scream? You scared me! I thought I did something wrong! I thought I ruined my chance!" Alvin squeaked out.

Simon sighed, rolling over onto his belly. He was so hard now… Shame Alvin wanted to be on top, he could make better use of his shaft. "Alvin… the thing you hit was my prostate. Of course I screamed." He huffed, looking right at the wall. "It's a sensitive spot for males. Stimulating it causes immense pleasure."

"...I thought that was just something in the stories…" Alvin admitted, blushing. He had a much better view of Simon's ass now. He always thought Simon would've been thin through and through, but his butt was rather… "Look at how sooooft~" Alvin cooed as he grabbed Simon's butt, squeezing the cheeks together before spreading them again. "So, I managed to find your good spot, right? So I should get it more and more!"

Peeking back at Alvin, Simon gave him a little glare. "Alviiiiin… Don't overdo it, you hear? I'm helping you out, I'm not planning on being left a mess."

"Relax Si… I'd never do too much here." Alvin said. He was starting to sound more and more like himself. "I'm just gonna squeeze in and, ya know… See what happens~"

Simon sighed, resting his head on top of his arms. "I guess I brought this upon myself… alright Alvin. Go ahead."

With a nod of his head, Alvin climbed up on Simon's bed and grabbed his hips, lifting them up high until his shaft was fitting in between those cheeks, grinding against him. "Hey Simon?"
"What is it now, Alvin?" Simon asked, looking back at him again.

"I love you, bro." Alvin replied. As excited as he was, he was moving slowly. The head of his cock met Simon's rim, and pressing down nearly had it completely open to him. His breath caught in his throat, his toes curling into the blanket below. Now… he was gonna have his brother. "Oh man… oh man… ohhh man…"

"...you can't do it, can you?" Simon pointed out. He sighed, rolling his eyes as he took matters into his own paws. He grasped the blanket tight and, after taking a deep breath, shoved himself backwards. Alvin's dick speared into him, and Simon let out a loud groan that nearly turned into another scream. Alvin was so close to his prostate… But…

"Hnnrh! J-Jeez, Si! You took half like nothing! And you feel so… sooooo hot…" he moaned, leaning his head back as he tried to stay standing. The squeezing was incredibly tight now. Every part of his shaft that was burrowed into Simon was loaded with shocks of raw pleasure. It was so much better than he fantasized, and they had hardly started.

"Alvin! Just keep moving!" Simon growled out, his claws hooking into the blanket and tearing it a little. There was pleasure, sure, but a stinging pain as well. He shook his hips, closing his eyes when the pain faded some.

Huffing, Alvin squeezed down on Simon's butt, watching the way it squished in his hold. "Ffff… o-okay Simon…" He grit his teeth, and finally started to hump. Pulling out wasn't as enjoyable, but burying into Simon's hole again? That tore moans out of Alvin. And it only got better as he picked up his speed. His tongue hung out of his mouth while he moaned, tightening his hold on Simon's butt. "Ohhhh man, oh fuck! Simooooon!"

"L-Language…" Simon growled out, covering his mouth before he ended up moaning again. He shouldn't have pushed Alvin into moving. Now that he was getting into it, his prostate was being pushed again and again, and sometimes the head of Alvin's shaft would glide right past it, making the rest of his length grind on it. Admittedly, it was the most pleasure he'd ever felt at once. His dick had gotten so hard, it didn't even throb much anymore. It was as stiff as could be, and Alvin slamming away at him like that had his precum dripping almost constantly.

"I can't help it!" Alvin whined. Even if he wanted to slow himself down, his body wouldn't let him. Whines, moans, screams, and groans were a near constant for him, and he loomed over Simon's body the whole time. Every time their bodies met, Alvin tried to push in that little bit deeper. "Si… Siiiiimon…"

The two chipmunks melted into a mess of sweat and moans. Alvin's hips pounded against Simon's ass nonstop, and Simon kept clenching himself around Alvin's meat whenever his prostate was touched. Their shared pleasure was on a rise, and the brothers forgot the world around them.
All that was, was their own bliss, and each other. At some point, Simon even rolled over onto his back, looking up at Alvin's face as he was reamed. Alvin had gotten to his knees, and he was holding on to Simon's waist to keep him close. He could feel himself on Simon's prostate, and he loved the way Simon did his best to not squeal.

Shaky as they may be, Alvin then held on to both of Simon's hands. His thumbs rubbed over Simon's palms, and the two of them looked right in each other's eyes. Alvin finally managed to get every last inch of his cock inside of Simon, and he nearly doubled over, starting to groan out once more as his hold on Simon's hands tightened.
"Y-You alright?"

"Simon… I'm gonna cum… I f-feel it, right at the edge…"

"Okay… okay, alright, you can let it out."

"I-Inside?"

"..."

Alvin pouted a little, slowing himself down from his rampant thrusting. "Simon?"

"..."

"Oh c'mon, please don't go quiet on me now! I'm trying to hold back until you say I can!"
Simon pulled on Alvin's paws, causing him to completely fall on top. He wasn't planning on it today, but… his lips met Alvin's.

Alvin's eyes went wide, but only for a few seconds. Right after, he leaned into the kiss, moaning loudly into Simon's mouth before giving his last minute humps. Orgasm was right there. Beckoning, calling, demanding. It wanted him as much as he wanted it. But another want was stronger.

Alvin moved a hand back down, wrapped around Simon's cock tightly. He started to pump it rapidly, lacing his fingers with Simon's. Hearing Simon moaned, even muffled, was more than enough. Alvin got back into his faster pace now, the claws on his toes making a few noticeable tears in Simon's blanket. He continued the kiss as best as he could, running his tongue up against Simon's a few times before he finally had to stop. Alvin slammed in, broke the kiss, and threw his head back as his cum gushed out of him, splashing messily inside of Simon and pumping out in countless thick strands.

"F-FUCK, SIMOOOON!"

Wincing, Simon was subjected to that intense warmth. And he thought the feeling of Alvin's balls swinging and smacking against his butt was weird. But… now that he was being filled up… that was the strangest, most enjoyable moment of it all. As much as he wanted to hold back, he soon found himself wrapped up in the throes of orgasm. Alvin was holding him down, and he couldn't move too much. But still, he wrapped his legs around Alvin's hips and quaked as his load of cum squirted over his belly, ribbon after ribbon being released onto both himself and Alvin.

Afterglow took over both of them, making the brothers hold on to each other nice and tight. Their heavy breathing paired with the sound of the wind picking up outside, though they weren't bothered. All that mattered was each other.
Alvin was the one who broke the kiss, huffing away as he looked over Simon's form. He couldn't believe it… it was all better than he expected it to be. He wrapped his arms around Simon and, with a weak whine, hugged him as tight as he could. He wanted the moment to last forever. Here, with his beloved brother.

"Hnn… A-Alvin… Alvin, you're crushing me…" Simon protested.

"I… I don't wanna let go…"

Simon raised a brow. "And why is that…?"

"W-Well… You said once and-"

Alvin was interrupted by knocks at the door. His mouth hung open as he looked towards the door. "Uh…"

"Simon? A-Alvin? Can I please come in?" Theodore's voice rang. "I need help…"

The two munks tensed up, trading looks again. "What do we do?" Alvin asked as he dropped his voice to a whisper.

"We can't ignore him, he'll know something's up then!"

"I knew I should have took the phone, he knows now!"

Simon groaned, laying out flat on his back. "What choice do we have, Alvin? He's not going to leave, and he's on his own."

"I mean…" Alvin blushed a little at the thought of Theodore. "If we don't have a choice…" He pulled out of Simon, making his way towards the door with shaky steps.