"Evie what the fuck are you doing?!" Aaron whispered angrily, obviously trying not to wake up Mum. He scrambled trying to hide his dick away. He hadn't had time to turn off the porn yet, Evie glanced at it.
'Hentai huh? Maybe we're more similar than I thought' she thought to herself.
"It's okay, carry on" she said, walking over to him on the bed.
"Evie seriously, fuck off, I'm not gonna jerk off with you here, it's weird."
Evie looked back at the porn to see it involved a cat girl, then looked back at her brother. He went red in the face, and quickly switched it off.
She sat next to Aaron, snatching the remote from him and put it back on.
The cat girl in the hentai was stroking a dick and gently licking at it. Evie decided she wanted to copy it. She pulled Aaron's duvet off him, leaving him completely naked. He was still rock hard.
"Evie... Please get out... You're making me feel uncomfortable." He asked.
Evie ignored him and reached out for his dick. She tentatively wrapped her fingers around it, and started stroking it gently. She licked her lips, unable to take her eyes off it. Her head moved towards it, until the tip was right outside her mouth.
A voice in the back of Evie's mind was telling her to stop before this went too far.
'He's your BROTHER, this is INCEST' it shouted. But the rest of her mind was focused on his dick. It didn't care that it was attached to her Brother, it just wanted to feel it, taste it, ride on it.
She stuck out her tongue and gently licked the tip. Aaron quivered slightly at the feeling.
"Please Evie...don't...we shouldn't..." He begged one more time.
Evie wasn't listening though, she was paying attention to the porn again, watching the cat girl give a blow job. She wanted to give a blowjob.
She gently licked up the shaft, then slid the tip into her mouth.
"Evie..." Aaron moaned, no longer fighting her advances.
She slowly bobbed her head on it, each time taking more of it inside her mouth. Her eyes were focused on the hentai as she tried to mimic every move.
Evie picked up the pace, quickly learning which tongue movements got the best reactions from her brother. She realised she wanted him to cum in her mouth, something inside her just needed it.
After a couple more minutes Aaron started to tense up, startling Evie slightly as he shot his first load into the back of her mouth.
She managed to stop herself from choking, and happily swallowed every drop, even licking it clean once he had finished.
She felt a warmness above her arse, almost like it was spurring her on, encouraging her to go further.
Without a second thought, Evie stripped off her clothes and mounted her brother, hovering her soaking pussy over the top of his cock.
She fought internally about it once more, then sank down onto it, letting it fill her up.
How great it felt silenced the thoughts shouting at her for losing her virginity to her brother.
It hurt a tiny bit, but she was so wet already that it was sliding in and out pretty effortlessly.
As she bounced up and down on it, trying to keep her moans quiet, the feeling above her arse got even stronger, like something was pushing itself out through her skin.
Evie turned to see a black furry tail was halfway through its growth, then went back to concentrating on the sex.
Her own orgasm had already envelopes her body, even though she didn't know entirely what she was doing, but it must have been right because Aaron started grunting and tensing up again.
She bounced on him harder, trying to encourage out every drop of cum. His own orgasm pushed her over the edge even further, making Evie push her face into a pillow to contain the noise.
Evie laid like that for a few minutes, letting her orgasm settle down before rolling off her brother.
"We...we can't tell anyone about this" Aaron said, panting.
"Definitely not" Evie agreed.
"But we... We can do it again... Right?" He hesitantly asked.
"Definitely" Evie replied, not even thinking about it.
She rolled in towards her brother and nuzzled his neck, ever so slightly purring.