Her plan does involve a certain action anyway

In the doorway Emily flicked off the bedroom light leaving Alex illuminated by the much softer bedside light. She was drapping herself over the bed in a way that the softer light really highlighted her delicate curves. Emily advanced stopping at the end of the bed. She felt an intents rush of affection for her little sister and knew without doubt that Marker or now they were spending the rest of their lives together. She crawled onto the bed kissing her way up Alex's body. Her little sisters toes curled as her lips ran over her foot and Emily smirked up at her.

"What I'm ticklish." Alex said with a growing blush.

Emily kissed her way up Alex's leg. "You are perfect." Emily said as she reached the silky thigh. Placing her weight onto one of her hand to free up the other she snaked a hand up from Alex's ankle until it reached her knee. As Emily planted kisses in a lazy trail towards Alex unfortunately deflowered pussy her hand pushed legs apart. Emily planted a single kiss on Alex's clit eliciting a squeak of pleasure.

Emily blew out a breath to lightly tickle Alex's pussy before kissing her way further up. When she reached boobs she latched on and sucked a nipple softly. Alex's hand entangled themselves in Emily's hair encouraging the nursing.

Emily was harder than she had ever been and as much as she was trying to take this slow and be gentle her lady boner was **** to into a lady. She pulled her head away from Alex's nipple against her sisters mewing protest and skipped straight to planting a kiss on her lips.

"I love you baby sis." Emily said planting another soft kiss.

"Love you too big sis." Alex said with a grin grinding her hips to massage Emily's cock between their stomachs.

Emily reached a hand down and after a bit of blind fumbling felt the warm wetness that was Alex's very empty pussy. "Love you more." Emily groaned as she thrust inside.

"Fuck." Alex groaned wrapping her arms around Emily head. "You're so big." She moaned.

"You ok?" Emily asked a little concerned. Alex had ridden her without complaint earlier but she was concerned now.

"Yeah just give me a second." Alex wiggled her hips giving Emily and wonder bit of stimulation. "Fuck it feel bigger in my pussy than it did in my ass." She softly whispered.

"To be fair my cock wasn't the first thing in that ass." Emily grinned.

Alex gave her a dead pan look and her hands went back to Emily's head pushing her down to resume sucking on a nipple. Emily was happy to comply and with a grin she latched on and looked up to see the pleasure on her sister face.

After a little more gentle side to side wiggling by Alex she gave a nod and Emily thrust her hips forwards.

"Ffffffuccck." Alex moaned. "How much more is there?"

Emily smirked and thrust a bit faster making her sister yelp before taking her mouth off the nipple. "Almost in." then returned to sucking.

"Then hurry - Fffucck me you're so big!" Alex shouted as Emily buried herself inside. It felt incredible.

"Fuck sis your pussy is so much better than you ass." Emily groaned as the nipple slipped free and she move up to kiss Alex.

Pulling her self up to face level she felt a lovely little hardness against her own nipples and looked between them to see their tits pressed against each other.

"Hey." Alex complained pulling Emily away from the hypnotic sight of boobs pushed together. "My ass is fucking fantastic." She poked her tongue out after finishing and Emily kissed it. "Ew did you just kiss - OH GOD FUCK ME!" As she was speaking Emily started to pound her harder unable to resist the incredible feel.

Alex's ass is tight and warm and she has great control of her muscles but her pussy was insane. Emily would never have really thought it from how guys always obsess over anal but the smoothness of a wet hole was the best. As much as Emily knew Alex loved anal seeing just how much pleasure Alex got from the fucking was intoxicating.

With each thrust Emily tried to angle her cock a little differently. Both to find what felt best to her and to see the different little expressions on Alex's face as her cock found new spots to fill.

"Fuck sis I'm so full." Alex said pushing on Emily's shoulders. Emily leaned back but didn't stop thrusting.

Emily looked down and saw that each time she bottomed out in Alex her cock actually made Alex's stomach bulge out slightly. With her boobs swaying with her thrust it wasn't a clear very but even the hint sent a wave of pleasure through her.

"Fuck that's fucking hot." Emily said moving around more to see the bulge move around with her. Alex reach down and put a hand on the bulge.

"Can you feel it?" Alex asked as she pushed down.

It wasn't much but Emily could actually feel the very slight pressure from the hand. "Fuck that it amazing." Emily said. She was getting close and knew exactly what would finish her off. "Who owns your pussy?"

"You did big sis." Alex groaned grinding her hips in rhythm with Emily knowing her sister was close. "You own my mouth, my tits, my ass and my cunt. I'm your's to fuck whenever and however you want me. I love you with all my heart and will you please fill me up with a nice big futa load." Alex moaned sending Emily over the edge.

"FUCK!" Emily said as her thrust slowed but became much harder. She suddenly wondered where she should cum then realised she didn't have to pull out thanks to the Marker. She drove herself home and felt the pressure in her cock explode. With each pulse she drove her cock home harder.

"I'M CUMMING SIS!" Alex screamed as Emily felt her pussy clench around her cock milking another few pulses out. Emily collapsed on top of her sister and kissed her on the lips her cock still rock hard inside her.

The paid stayed like that for a while lightly kissing each other. Emily would have been happy to leave her cock inside her sister but she did have a plan she wanted to try out also they were both sweaty and she didn't want to feel icky because she waited too long.

The rolled off Alex and grabbed the Marker.

"Ohh what have you got for me this time? Bigger tits? A deeper pussy?" Alex asked her eyes dancing.

Emily leaned over and kissed her quiet. "I already told you are prefect."

Alex giggled and smirked at her sister. "You like me, you like me, you -"

Emily rolled her eyes and kissed her quiet again. "Something use." She focus her intent and wrote. Clean. on a free space on Alex's arm. "Ok now just think 'I want to be clean'." Emily said leaning up to get a view of Alex's pussy. Her cum was starting to slowly leak out. As she watched the cum disappeared. Emily grinned and ran and hand over Alex's body. Not a trace of sweat. Emily leaned down to smell Alex's pussy to make sure there wasn't any smell of her cum. She also planted one more kiss on her clit.

"Oh cool. and if you don't get your head out of my pussy we are going to be having another round." Alex grinned running a hand along Emily's side.

Emily moved back up to lay down beside Alex and wrote Clean on herself. The sudden feeling of cleanness was not what she was expecting. She kinda wanted to go roll in mug or grease and see how being suddenly magicly clean would feel. She was pulled from those thoughts by Alex.

"You know if you wanted you could use the Marker to get rid of our need to sleep so you can keep filling my pussy with cum all night long."

Emily considered it for a long moment before deciding against it. The Marker was obviously magic and she could just wipe off the mark but fucking with her and Alex's sleep patterns, who knows what would happen. Maybe when she wiped off the mark all the lack of sleep would suddenly hit at once and leave them in a coma, the same when for food and water.

She shook her head at Alex who got playful smirk. "Oh I get it you love sleeping with you cock inside your baby sister too much." As she said it she turned over and wiggled her ass against Emily's side. Emily grinned and turned to spoon her little sister. Her still mostly hard cock resting between Alex's ass. "Or do you just love the idea of fucking me in my sleep?" As she said she ground her hips and clenched her butt around Emily's cock which returned to full hardness.

"Oh just for that." Emily reached and hand down and grabbed her cock. After a short adjusting she thrust up and buried herself to the hilt in Alex's pussy.

"fffffffuuuuuck." Alex moaned.

Emily didn't move at all and Alex quickly got impatient and tried to grind her hips. That was stopped by Emily's firm hands on her hips. "Ahah. I am going to sleep with my cock inside you." Emily chided. Alex huffed and kept trying to grind her hips to encourage a fuck. Emily was tempted but teasing her little sister was fun and she had cum a lot today already. She kissed Alex's neck. "Night sis." She reached over and turned off the bed side light.