Chubby!SebastianXReader- My Succubus

Sebastian Michaelis wasn't the man everyone thought he was. Sure, he was a demon. That was nothing new. What was surprising was his natural appearance. In his true form, he was almost hideous.

He was huge and gruesome. It was enough to turn anyone away just the mere sight of it. He had black horns like a ram that stuck out of his head, accented by his jet black hair. He had long claws and feet that resembled high heels. His black crow wings spanned 18 feet. The most unexpected part was his size. He was actually quite large. It took a lot of cotton to cover his large body.

But even in this false human form, he still had a bit of a potbelly. To make him seem more desirable, he shrunk it with a male corset.

He always worried about his intake because of what it did to his body. But through it all, he kept his sights set on a human woman, (name)

She was a lovely lady of the manor. No, She wasn't Ciel's wife; but a relative that was currently just visiting. She had been here a few times since Sebastian was around, and each time, she fell in love more and more.

Ciel was out on business and the lady was left here. (Name) was always poised and elegant in her graceful charm and a bit witty as well. The thing that shocked him was that she didn't bother him with such petty things like clothing her and bathing her like his master did.

Sebastain was readying himself this morning. He stood in the mirror in th undergarments. He grabbed his stomach. He was still smaller in this form than in his true form. He was about 230 in this form. He still didn't like it.

(Name) was practicing the piano. It filled the mansion with classical music. Sebastian wouldn't admit it out loud, but he loved her. He smiled at her music as he laced and tightened his corset.

It took him a bit of time to get it tightened up.But eventually, he looked like he weighed 160 pounds, finished dressing himself and walked down to meet (name).

Music still filled the mansion. She played it beautifully. Those lessons really paid off.

"Miss (name), you're an excellent musician." He whispered into her ear, sending sshivers down her spine.

It made her slam her hands down on the ivory keys making a wrong chord.

"Oh hello, Sebastian!" She said, standing up and curtsying to him. He chuckled, returning a bow.

"Always such a lady." He said, turning away. As he walked away, she noticed a small string coming from under his shirt.

'Is that...a corset lace?' She thought

'Come to think of it he has been acting weird lately.' She thought.

That was because he was getting even fatter than he normally was. He put on a few pounds in this body; meaning he was probably 20 pounds fatter in his true form. After he finished his duties for the day, he took a break. (Name) followed him, snuck up behind him....and pulled on the loose string...loosening the corset; His potbelly surged forward a bit.

He gasped. "(Name), please turn away." He said, attempting to fix the corset.

She didn't and saw his belly in all it's pudgy glory. "Why's that Sebastian?" She asked him while keeping his hands away from his soft doughy center.

"(N-Name), I have a confession...I'm not who you think I am....In more than just my size...."

"Then tell me what kind of person you are." She said in a graceful twist.

"I'm not a person at all..... I am a demon.... A disgusting creature from the depths of hell...."

"That just makes you sound more interesting." She husked into his ear. Sebastian was in shock. A human girl wanting him? Suddenly, a cracking sound grew. (Name)'s skin turned bright pink as red and pink wings grew from her shoulders; as well as a tail with a spade end and fangs.

"I'm not that far different from you, 'Mr. Michaelis'. I'm a succubus."

Now it made sense to him; However, her prey was on humans. Why would she be even remotely interested in a fat demon? How was she even related to Ciel?!

"I've taken a liking to you, Sebastian. I've been trying to get bocchan's soul for years. Then you came along. I don't wish to kill you. I consider you more of a.....love interest." She said, slowly removing his jacket and undershirt, the remainder of the corset. This showed his exposed human stomach. (Name) licked her lips while her hands rubbed his soft stomach.

"Mmm...so thick and juicy. Most demons have little no fat on them. It's nice to see one with some meat on his bones." She said, kissing his neck.

His animalistic instincts took over. "I'll show you something that will really entice you, then." He changed into his true form.

The gray skin shined in the moonlight. His jet black hair accented the black ram horns coming from his head. The crow wings sprouted from his back. His feet turned into animal claws, resembling high heels. Finally, something unusal for a demon was his fat body. He had to have weighed almost 435 pounds (name) guess.

She smiled at the sight. "Mmm....so succulent and such a  big demon." Her hands roamed his large belly.

"No woman or succubus has ever said that to me before...in a good way." He said as he placed his clawed hands on her fuller hips. "I wonder what it would be like if you were to rock my world tonight?" She leaned up and licked his chubby cheek before kissing it.

"It would be one hell of an experience." He said, kissing her as she jumped in his arms.

A few hours later, Sebastian's quarters were completely destroyed. She snuggled up towards the demonic butler in the remnants of his bed.

His belly was so soft. It was plyable and jiggly to the touch. She melted into it as he held her with his pudgy, yet muscular arm; encapsulating her with his black, feathery wing.

"Has the little succubus been pleased?" He teased, kissing her forehead.

"I wonder if you could do that with me every night?" She pondered out loud for him to hear.

"It would be a pleasure." He said, kissing her again

Time skip:  months later

(Name) cuddled up with her flabby hubby. Her hand rubbed her six month belly that they were eager to see what they had created.

Both in natural form, Sebastian wrapped a protective arm and wing around his succubus wife. He loved her more than anything. Sure, she'd lure in prey, but do nothing with them but eat.

Sebastian placed his hand on her stomach; mindful that his claws so that  didn't scratch the precious (evil) cargo inside.

"It's going to a hell of a time parenting this little monster." She teased.

He chuckled, making his large belly shake. He gently carressed her red tummy. "You're right. They're gonna be a handful when they get about 2 years old." He said as he placed her in his lap; covering her with his wings. He was always so protective of her. No one would hurt his little evil angel.

"But we're a hell of a pair." She kissed him.

"Indeed we will." He said, kissing her.

A couple months later, a little baby demon boy was blessed to the couple. He had his daddy's dark skin and hair, but his wings and tail came from his mother.

"He's such a cutie!" She almost squealed when the baby finally got to be in her arms. He opened his little red eyes for the first time. Sebastian's cold heart melted.
"Just like his daddy."

Sebastian held his son. "What are we gonna name him?" He asked

"Lukas." She said to him while showing him the newborn. The demon smiled as his son nuzzled into his chest.

Even though this child would one day become a cold-blooded killer, Sebastian and (name) were the proud parents of this little abomination. Sebastian kissed (name) forehead as she fell asleep after a hard labor. His eternal life finally had meaning to it.