"Sariel, I want to fuck Me."

"Azzy...No."

Asriel couldn't have been anymore agape in shock at Sariel's reply. He moved over to Him, Throbbing hard-on showing in His shorts. "Excuse me!?!? W-Whyyyy???"

Sariel Sighed, As He rolled His eyes. "Because I really need to finish this Homework now. I've held off it too long for the weekend."

Asriel's Whines got louder. "C'monnnnnn!!"

Sariel Sighed, Glad that Neither Toriel, Asgore, Or Frisk was here Since they went to a movie. "No, Crybaby."

"What if I did it for you?"

and Just like that, Sariel's hands halted. His ears twitched with interest as he spoke slowly. "...What?"

Asriel shrugged. "I said I'll do it for you, I don't mind as long as I get a dick in my butt in return." He gave Sari a flirty wink as the cock in his shorts throbbed again. "So...Deal?"

The Former flower turned around quickly, A Bulge of his own forming on the outline of his pants. He quickly shook Asriel's hand, Smiling fiendishly with His dark eyes.

"Deal."

[...]

*SQUUIRRRRTTTT...."*

With enough lube, Sariel finally decided to thrust, Pushing His cock inside of His needy Goat of a brother. Said Brother just moaning all aloud as He pushed inside. 

"Yesss...." He wailed. " Get that Big dick inside meeEeE!~"

Sariel couldn't help but grow a grin at how high his octaves got with a surprisingly fast thrust. "Hehe...Cute."

He moved a hand to Hit at Asriel's Rump, Causing the Goat to Whine loudly. "You make more of that, Okay Crybaby?"

"Y-Yes Daddy...~"

without further ado, He began His thrusts, Pushing His girthy member in and out in a slow manner, that would soon get vigorous and rough.

Asriel could feel His dick leaking pre, getting it all over the sheets, Below... but he didn't care. He wanted to get railed like a Fucking animal! That's all he cared about~!

Sariel raised a hand to smack His fat ass again, It jiggling all like soft jello as a result 

And He Would do it, Again and Again as he went rougher. 

"F-Fuck....W-Who's Your daddy?"

"Y-You are!"

*SMACK!*

"Who?"

"You!"

*SMACK!*

"I-I said Who...Mhh~ Fuck!"

*SMACK!*

"Who?!"

*SMACK!*

"A-Aaah, Sariellll...~!*

*SMACK!*

"I said, WHO, Crybaby slut!"

*SMACK!!*

"WHO?!"

"Y-YOU, DADDY~!!"

"There we fucking Go!"

with one more Hard smack, Sariel could feel His Older Brother pushing back on His dick, Grinding against it as Sariel Bucked harshly with no mercy. "F-Fuuuck Yes, You fucking SLUT!~"

The Room was quick to have the scent of sex within it. The two goats radiated much musk from it, their sweaty naked bodies continuously touching one another in such heated passion.

With the sudden tight clench that would come afterward, Sariel could only grunt with little words as He felt such a familiar feeling rise. "Az, I...G-Guh, Shiittttt!"

Thrusting deep one last time, Sariel Came, firing off hot, Strong ropes of cum, His cock throbbing hard as it fired off such virile ropes. Asriel came as well, letting out a loud cry as he sprayed off strains of his own hot cum.. "F-Fucck...~"

And as such, Sariel pulled out, Not before Giving Asriel one more smack, of course, He loved the tired moan Azzy made soon after. He would then look at Azzys now cum filled hole; Ruined, A bit gape, and oozing with a bunch of goat cum~

Sariel couldn't help but grin at the sight. What a lovely mess he made~

"Mmh..~" He could Hear Asriel, He was tired, But not too tired. It was surprising, Given the fuck session they just Had. "...G-Gyote More?~"

...

Sariel chuckled, Giving Asriel a nice tap on his abused rear. "Doesn't even make sense, Crybaby." He chuckled.

"Gimmie a break...You ruined me..."

Sariel rolled his eyes. "Whatever..."

Getting on His knees Now, He moved over to Asriel's cock, It twitching for more as it leaked cum out of the slit. 

Sariel willingly licked up the slit slowly, Liking the way it throbbed in surprise. The taste was a bit Salty, But nothing too bad really. Asriel's moans were even better~

"A-AaaAaah~!!!"

Music to His ears~

but...

Before He continued, He had to speak again. "You ARE going to do my Homework, Right Azzy?"

Asriel's Mumbled something in reply; "Mmhmm...hmm..."

Sariel felt a little annoyed at no direct answer, But He let it slide as he popped the head back in his maw to glide his tongue all around and polish.

He grinned at Azzy's moans rising again.

It really was Music to His ears~