"Stay With Me"

By MaturePopcorn

Description: AU where Frisk was able to truly save Asrie. As a result, Asriel and Frisk live together like Chara and Asriel did once before. Only this time, brotherly feelings go a little further… Story takes place in the future when Frisk is around 18, Asriel is about the same age.

WARNING: This chapter contains MUCH SEXUALS. Like, really. This is the chapter where they finally DO IT. ^_^ So have fun with that… (Rated M+)

Author's note: WOW I am so sorry this is a little late…! Aughh! I've been sick lately, and with school… But here it is! In all it's smutty glory! Lol I hope you enjoy it…! ^_^

Much love,

~Kisa Alvarez

Chapter 3

Asriel woke up with a rather unattractive snort, suddenly wide awake. He glanced over at the window in his room and, seeing that it was still dark, sighed and closed his eyes. Unable to sleep, he nuzzled his head into his boyfriend/adopted brother's neck sleepily, smiling to himself as the human boy made little noises in his sleep. The monster boy then looked at the clock beside their bed. 5:08 am. Asriel groaned, and his stomach growled. He still had quite a while before everyone else woke up, and he was hungry; his body believed it was breakfast time. Luckily, he knew where Frisk kept a hidden supply of chocolate in their room... But getting it would not be easy.

He sat up ever so slightly, barely moving the human boy beside him. He thought about how to complete his mission very carefully. He had two options: he could either carefully attempt to sneak his way to the closet, where the door was quite creaky, and sneak his way back into bed without waking Frisk... Or he could bolt out and grab it, run to the bathroom and jam it down his throat, not caring if he woke his boyfriend. He breathed in heavily and looked longingly at the closet before choosing the latter, silently jumping out of bed and dashing to the closet. By the time he grabbed two dark chocolate bars, Frisk was already sitting up and blinking, trying to figure out what was happening.

Asriel squeaked as he stubbed his toe on the bedframe on the way out of the room, and Frisk caught a glimpse of what was in the monster boy's hands. "Hey! Those are my last two chocolate bars!" But Asriel was already in the bathroom, where he locked the door and ripped the wrapper off the first bar, shoving it in his face. Frisk was now up and in the hallway, leaning against the bathroom door and moaning.

"Aaazzy...! Those are miiine...!" He sleepily yelled through the door. "Give 'em baaack..."

There was a pause, and Asriel slowly opened the door; Frisk soon saw that he was too late. Both chocolate bars were nowhere to be seen, and Asriel's soft white fur was stained a suspicious dark brown around his snout.

Frisk growled lowly. "I can't say I entirely blame you... I know how you get around chocolate... And strawberries..."

Asriel's semi-scared expression turned into a half smile. "So we're cool then?"

Frisk snorted. "Of course not. You owe me big time for this..." He spoke softly and seductively.

Asriel shuddered as cold hands touched the back of his neck; Frisk was wrapping himself around his monster brother, thief bodies intertwining.

"Now let's see..." He whispered, licking some of the chocolate off Asriel's snout. "How can you pay me back for this...? You know I was looking forward to that chocolate..."

Asriel started shivering. "F-Frisk, I'm cold... Can we go back to bed?"

Frisk shook his head. "Nope. You still have to make it up to me..." He closed his eyes and kissed Asriel on the forehead. "By making me pancakes."

Asriel paused, then laughed. "Okay! Come on, I'll make 'em now."

Frisk raised his eyebrows. "At five in the morning?"

Asriel nodded vigorously, his ears flopping up and down wildly. "Yup."

Frisk sighed softly. "Ok... I'm hungry now anyway. I'm surprised we didn't wake up mom though..."

Asriel then realised that Frisk was right; surely Toriel would've heard all that noise they had made…

"Maybe she's just hungover...?"

Frisk shrugged, muttering a quiet "Maybe" before yawning widely.

Asriel giggled and grabbed his brother's hand, walking into the kitchen. Upon arriving at the stove, Asriel found a note plastered to the microwave.

Asriel and Frisk,

Me and Sans couldn't sleep last night, so we slipped away to Snowdin to hangout at Grillbyz. Please forgive me for this... Breakfast is in the fridge!

Xoxo Mom

Frisk chuckled. "She's getting really lax with the whole parenting thing, isn't she...?" He read the note again. "Breakfast is in the fridge...? So she made breakfast at who-knows-when in the morning and then left? Wow."

Asriel stretched. "It's cool, though. She left the newer vodka in the freezer, so if you wanna...?"

Frisk shrugged and opened the fridge, pulling out pancakes on a plate and putting them in the microwave. He then opened the freezer and pulled out the nearly full bottle of Grey Goose. "I guess a little wouldn't hurt. And besides, you're gonna need it for later."

Asriel blinked as the timer went off for the microwave. He opened the door and pulled them out. "Later? What... What's later...?"

Frisk opened the bottle and smiled. "For when you pay me back for eating my chocolate." He drank straight from the bottle, downing about 3 shots worth before handing the bottle to Asriel, smiling widely.

Asriel just stared, amazed. Then he shook himself back and stuttered, "P-pay you back? But..."

Frisk shook his head dreamily. "Mom made breakfast, yeah? That means you still haven't paid me back."

Asriel gulped and looked at the bottle for a second, then put it to his lips and swallowed a full 4 shots worth.

Asriel recoiled at the taste but forced it down. "Okay, no more. No more alcohol for now." He capped the bottle without replacing the missing vodka with water, placing it back in the freezer.

They ate their pancakes somewhat quietly until the alcohol hit them like a bus. Then they were substantially louder, singing and laughing as they drowned their pancakes in syrup and strawberries. When they finished, they cleared their plates and stumbled back to the bathroom, climbing into the shower together. The stripped while in the tub, throwing their clothes onto the tile nearby, and turned the water on hot.

Frisk buried his face into Asriel's soft white fur, sighing happily. "It's... So warm..."

Asriel only giggled in response, starting to shampoo his fur. Frisk's hands were already wandering, however, and they soon found themselves at Asriel's waist. Asriel started panting and moaning a little, Frisk's hand reaching around to the monster's boy semi-hard cock. As he started to jack him off, Frisk whispered softly, "You're not getting off easy for what you did..." into the monster boy's ear. Asriel moaned louder, nuzzling his head backwards into Frisk's.

"K-keep going...!" He was now panting heavily and the shampoo had fallen to the floor. As the bubbles rinsed out of Asriel's fur, Frisk, who had already washed his hair by this point, stopped pleasuring Asriel and smirked.

"Let's go back to bed... I'm sleepy..."

Asriel squeaked slightly; there was something about the way Frisk said "bed..."

They didn't even bother drying off, instead turning the shower off and stumbling back to their room, naked. Asriel got on top of the covers, waiting for his boyfriend, but Frisk dropped to the floor and began looking under the bed instead. He pulled out a plain looking box…

Asriel gasped quite loudly. He blushed and readjusted himself on the bed. "O-oh... Th-that's what you meant...!" He meekly squeaked out.

Frisk grinned evilly. "Oh, yes..." He opened the box, pulling out a condom and a bottle of strawberry scented lube. He also pulled out a tight looking spiked collar and leash.

Asriel panted apprehensively. "Haah... I-I guess... Yeah..."

Frisk climbed onto the bed and nuzzled his brother. "Hey, if you don't wanna do this..."

Asriel shook his head, quickly responding, "N-no, I do want to...!" He smiled faintly. "I'm just a little... Drunk-y..."

Frisk giggled. "Silly, we both are..." He crawled up to face Asriel. He kissed his monster boyfriend, letting his tongue roam the inside of Asriel's mouth. By now, both boys were rock hard; Asriel started to grind on Frisk's knee, sending waves of pleasure through his body.

Frisk broke the kiss, smiling warmly, yet somewhat evilly. "Oh, no you don't... I get to have fun before you do." He lightly draped his hands around the monster boy's neck, pulling Asriel's head down to Frisk's stomach. With his head bent down, Frisk put the collar on Asriel and attached the leash, pulling it. Asriel yipped in surprise as Frisk's free hand suddenly forced his head towards the human boy's crotch, heavily implying what was to come next.

Asriel obediently opened his mouth and put all 16cm in his mouth, feeling Frisk's tip hit the back of his throat. He gagged slightly and pulled back a bit, but Frisk was enjoying himself too much. He thrust his hips forward, shoving his cock back down Asriel's throat.

Asriel started sucking his boyfriend off, enjoying the taste and feel of the moment. Frisk moaned and gasped frequently, the alcohol still strongly coursing through him, intensifying the pleasure.

"Mmn... Azzy... W-when did you learn to do this...?"

All Asriel could manage was a severely muffled, "Mmnf...!" and Frisk giggled, still panting and blushing madly. Frisk stopped Asriel's sucking by putting his hand on Asriel's head and pushing it back, allowing him to stand up as Asriel gasped for breath.

"F-Frisk, why'd you stop...? I was enjoying that..."

Frisk smirked. "Well then, it isn't punishment, now is it?" He grabbed the condom and lube from the nightstand beside their bed and sat down on the bed, legs crossed facing Asriel and the wall.

Asriel blushed a severely dark red. "H-haaah...! I... I'm so horny...! Please just do it... We don't need that..."

Frisk shook his head somewhat forcefully. "Yes, we do," he said, ending that conversation right there.

Asriel moaned with impatience as Frisk tore open the wrapper and pulled it out. "Go faster then...!"

Frisk looked at his lover, somewhat annoyed. "Here, you do it then." He handed Asriel the condom and grabbed the bottle of lube, squirting some into his hand. "Take it out and put it on me."

Asriel squeaked from sheer hornyness and obliged. While he was about to put the condom on Frisk, the human boy suddenly grabbed Asriel's ass and put two fingers at the opening to his hole. Asriel froze as Frisk slowly put them in, going up as far he could.

"F-Frisk...! I-I-" he moaned louder than ever before as Frisk scissored his fingers, stretching Asriel's hole wide. Asriel dropped the condom and grabbed Frisk, holding him close and scratching his back. Frisk winced but kept thrusting his fingers, nuzzling Asriel's warm chest as he did so.

This continued for several minutes until Frisk decided that Asriel was stretched enough. He took his fingers out carefully and grabbed the lube bottle again, this time putting some directly onto his dick. While Asriel instinctively bent over, head down and ass up, Frisk briefly jacked himself off to coat his cock with the lube.

Kneeling directly behind Asriel, Frisk murmured, "Ready?" He received a nod in response, and positioned himself over Asriel's now wide hole.

Forgetting the condom completely, Frisk put his rock-hard cock into Asriel's ready hole. He thrust in easily, going all the way up to his balls as the monster boy half-gasped, half-moaned for a solid ten seconds. Frisk stayed in this position for a few more seconds before beginning to thrust, growing in speed as they both grew more used to the feeling. By now both boys had lost all other senses of the world around them, feeling nothing but the animalistic urge inside as waves of pleasure coursed through their bodies. Frisk continued thrusting, harder and harder, while Asriel was lost, drowned out in wave after wave of pure ecstasy. They stayed like this, Frisk occasionally tugging at Asriel's collar and biting his neck, for almost half an hour. Asriel was now jacking himself off, but had to stop frequently before he came too close to finishing.

Finally, Frisk moaned loudly, "A-Azzy, I'm so close...!"

Asriel moaned and nodded, jacking off once more. "F-finish inside me...!"

Frisk gasped several time before crying out as he came, dumping his load into the monster boy. His eyes were shut tight in pure ecstasy, and all he could do was thrust and gasp. Asriel, feeling the warm cum hit the inside of his hole, gasped sharply and came only several seconds after that.

When Frisk finally stopped, he pulled out and collapsed next to Asriel, who slumped down onto his stomach. Frisk cuddled closer to his adopted brother, sighing in happiness.

As Asriel started to drift off, he heard a faint whisper of, "I love you," and smiled softly. He was truly happy.

*
Later...

Toriel unlocked the front door of her house and entered. Seeing the bathroom light on, she walked to it and turned it off. Noticing the clothes still strewn about on the bathroom floor, she made a soft, "Tsk, tsk..." and picked them up, carrying them to the laundry room.

She made her way to the kitchen and opened the fridge. Finding nothing particularly enticing, she opened the freezer and looked for something to heat up.

She noticed a bottle, put back haphazardly, and moved it to it's correct location before realisation hit her.

"This... This bottle seems awfully empty..."

Author's Note: Cliffhangers are fun. Bye!