Reincarnated as the Demon King's Son

"But before I go. Can you do me favor?"

"What is it, sister? I will do whatever you want me to do."

"Can you transform to your adult form?"

"Uh…. Okay." Aldred transformed to his adult form.

Dina watched his transformation into a handsome well-built man, standing tall at 189 CM. She put her hand all over him, and asked: "How do your clothes fit you?"

"Uhh… Magic."

Dina shrugged.

"So what do you want me to do?" Aldred asked.

Dina blushed. "Can you also do 'that' to me?"

"That what?"

"You know. 'That'. Like how you did inside the tent."

"You mean sex?"

Dina blushed. "Why are you so direct?"

"But you're my sister."

"It's normal for demons and vampires to marry their own family. After all, the purer the blood line, the better, so our mom and dad are a rare one, because vampire and demon almost never marry together."

"The purer the blood line, the better? So that's why I am so weak?"

"Yes. You're a slow grower, but mom said your potential is better than dad, so you will pass him in the future."

Aldred sighed in relief. He thought he was going to be weaker than them forever. "Wait, sister. You said marrying family members is normal, does that mean milf and incest is normal?"

"It's not just normal. It's the norm. People will think of you weirdly if you don't marry your family members."

"Ohh… wonderful."

"What was that?" Dina asked.

"N—nothing."

Dina put her hands on his chest, blushing. "So… can you do 'that' to me?"

"Anything for my lovely sister."

Dina blushed as Aldred went in to bite her neck. "You evolved quickly."

Aldred did not reply and kept sucking her blood. Her blood taste was so similar to mother's. To this day, he still remember that divine taste.

Ignoring the notification that came to his eyes, Aldred turned his sister around.

Dina's face reddened. "Aldred, you are so good at this."

"I haven't started yet." Aldred lifted her robes, revealing her snow-white ass in silky black underwear. Her long smooth legs parted to give way to the heavenly cave.

Her round butt was perky and smooth-looking. It was as beautiful as two beautiful pearls complementing each other.

"You look so perfect, sister." He wrapped his hands around her slender, curvy waist.

He gently caressed her ass as though it was a fragile jewels. In that moment, Dina's whole body trembled. Aldred grabbed her butt cheeks with all ten fingers. A wave of pleasure ran through her.

"Uhhmmm!" Dina moaned in a sweet tone, inviting Aldred to keep going. She intentionally amplified her senses, so she could feel Aldred's touch even more. A tinge of pain mixed with incredible pleasure as he entered her.

Her mind wasn't in the right place, and she enjoyed what Aldred did to her in the fullest. She wanted more of him.

Aldred massaged her perky butt. He looked like a master with his hands movement. With his godly eyes helping him, Aldred knew her sensitive spots. His experience in sword art helped him with his hands.

He had better control over them, and kneaded her butt like a bread master.

"Ahh… Aldred… More…. More, Aldred." The amplified senses strengthened the lust within her. She only felt this way towards her dad before, but ever since Aldred came, she felt this towards him as well. She had been holding this for uncountable millennia even though she could ask her dad for pleasure, she did not do that for she felt like she wasn't worthy of him.

But Aldred was her little brother. She felt like she was worthy of his touch.

Her eyes sparkled with beautiful stars, and her lust grew.

Trembling even harder, Dina felt a tingling sensation on her bottom lips. She felt safe and comfortable in Aldred's hand. Then she felt something inside her.

"Aldred, keep going. Something… something is coming inside me." She wanted to pee, but she held it.

Aldred's godly eyes activated, and his fingers slid underneath her underwear, pinching her golden jewel—The clitoris.

When his finger touched the pink little pearl, Dina felt as if her whole body was struck by a lightning bolt of pleasure. In that single moment, her mind was shut down, and the muscle that held the water within her body relaxed, causing a flow of heavenly, sparkling juice to gush out like a beautiful waterfall.

"Ahhhh!" Dina experienced an orgasm for the first time in her millennium of existence.

Aldred then pulled his pants down and inserted his rod inside her wet cave. He ripped her robe, and grabbed onto those pair of melons.

Dina breathed profusely every time Aldred pushed his rod inside of her. She squirmed in his embrace, and slightly moving back and forth as well to increase the pleasure. The muscle inside her heavenly cave moved to wrap around his rod. She wanted it to hug it tight.

All of this happened while they were standing. Aldred was currently inserting his rod in and out from behind her while standing. He loved this new position.

"Get it inside me more, Aldred. Get it inside your sister," she said while moaning.

Dina experienced another orgasm which soaked his rod even more. That made the movement of his little brother to become smoother and quicker. His rod elongated bit by bit.

He wanted to tease his sister by slowly inching up inside of her.

Dina noticed this and smiled. "You little naughty boy. You're teasing me aren't you?"

Aldred squeezed her breast and moved faster, making her let out a small moan. She was huffing and puffing while he ravaged her body.

"Sister Dina. This is so amazing. Your body is so amazing."

Dina blushed when she was complemented by him. Suddenly, Aldred felt the peak of pleasure, and thought it was time to let it out. So he increased the length of his manhood and let it penetrated her womb. He moved back and forth a little inside to tease his sister.

He hugged her, pressing her melons harder. "Do you want it, sister?"

She was breathing profusely, cheeks red as fresh peach. "I want it, brother. Give it to me."

"Your wish shall be granted." He increased the length more, and injected all of his seeds inside.