porn battle xi prompt 4: mortal instruments, Alec/Isabelle, penetration

[liquidtears]

Here's the next one! 

mortal instruments, Alec/Isabelle, penetration

It happened during the battle on Valentine's ship.

Isabelle saw her brother get thrown off the deck by one of the monsters they were battling and could not control her grief. She shouted her brother's name. No, he couldn't be dead. Please somebody help him!

Luckily, everything had turned out alright. Alec was still alive.

Now, she lay there in her bed, thinking back to that moment where she had screamed her brother's name. Every time she closed her eyes, she saw him getting thrown off that ship again.

It had to stop. So she stepped out of bed and silently crept to her brother's room. She tried the door and discovered that it wasn't locked.

"Alexander?" she whispered after she had closed the door again and walked through the darkness that was her brother's room.

A small witchlight that was her brother's stele illuminated the room, letting her see his face. "Isabelle?" he asked. "What are you doing here in the middle of the night?"

She ran the remaining steps and wrapped her arms around him. "I couldn't sleep. Everytime I close my eyes I see you getting thrown off that ship, it's horrible, Alexander." she whispered... then she kissed him, which caused the witchlight to fall on the bed thus plunging them in darkness again.

"What did you do that for?" Alec asked.

"Well, I... I am just glad you are alive, Alexander."

She pulled away and took her clothes off in the darkness. Her brother could not see a thing what she was doing. "Izzie?"

"I'm here." she said, taking one of his hands and guided it to her pussy.

"ISABELLE!" he exclaimed.

She blushed, for she didn't love Simon or anyone else, no... it was pure sin.

"I love you, Alec." she whispered. "I don't know what I would have done had you died tonight." she sobbed.

"W...What do you want me to do?" Alec whispered, reaching forward to kiss her, but his hands touched her breasts.

"I want you to penetrate my pussy with your cock." she said, no beat in between the words.

"S-Seriously?" Alec asked.

"Yes, brother, I am."

Her hands slowly pulled down his brother's underwear, exposing that big hard human stele of his. "You can be as rough or gentle with my pussy as you want, Alexander." she whispered.

His heart broke for her. "Izzie, I would never want to be rough with your body, you know that."

"Just thrust inside me, Alexander, let me know you will protect me from harm."

And slowly her brother thrusted inside her pussy, her cry of pleasure cut off by his lips as he also used his tongue while he gently played with his sister's body.

"Hmm.." Isabelle moaned against his lips between their kisses, "so good..."

Until he told her that he was going to get his climax.

She wasn't even shocked. "Do it. Show your love to me by coming inside my pussy."

And he released himself inside her.

They held eachother tightly as sleep overtook their senses.

Until the next morning.