Cosmos was experiencing one of the best days of her life. As of lately she had been spending more and more time with her favorite Idol Ayu, and just recently, the idol had finally given her a back-stage pass to her concert, with some sexual persuading of course. Now, she was sitting in her very own seat, watching the Idol from the backstage, a view she knew her regular fans didn't get to see. Just thinking about it made her heart flutter in her chest from pure excitement, but it wasn't just her heart that was feeling a fluttering sensation.

'It's so hot seeing Ayu perform! It almost feels like she is performing just for me!' Ayu thought to herself excitedly, touching her knees together as she raised her hands and excitedly cheered from the sidelines.

Secretly Cosmos knew she was supposed to be quiet. Ayu had told her multiple times to stay quiet so that other fans wouldn't hear her and question who it was that was receiving special treatment from the idol, but she just couldn't help herself and she cheered loudly from the side-stage.

Thankfully the stadium full of screaming girls couldn't her the superfan at all, the screams echoing and bouncing off the walls, along with the loud music and Ayu's beautiful vocals filling the room.

Ayu lifted her head to the blinding lights and the screaming fan-girls, her chest rising and falling quickly as the fans screamed in an uproar, applauding her final performance on stage.

The idol smiled and waved to them all, keeping the pose until the spotlight and stage lights finally switched off. Dropping her hands exhaustingly, she ushered herself off-stage, immediately being handed a towel and water-bottle by her manager.

"You did fantastic! Another amazing performance!" her manager praised.

"Thanks!" Ayu said as she dried herself, taking a drink of her water-bottle. She glanced at the back-stage couch, shocked that Cosmos wasn't the first one to greet her, but when she looked, what was even more alarming was that the girl wasn't there at all.

Puzzled by the disappearance of the one fan she usually couldn't get rid of, she shrugged her shoulders and headed to her private dressing room. Flipping the sign over to 'Do not enter', and walking inside, locking the door behind her.

As soon as she did so, she felt a pair of hands on her shoulders that tossed her against the wall. The idol would have screamed, but her lips were forcefully covered by another pair of lips. With wide eyes it took her a few seconds to realize it was Cosmos who has pinned her against the wall and was now kissing her aggressively, keeping her hands pinned at her side.

'C-Cosmos!?' she thought to herself as the eager girl made-out with her without showing any signs of stopping. The idol groaned in protest but was given little room to fight back, and soon found herself kissing her back, slowly closing her eyes as she began more and more seduced by the feel of her lips.

She hummed softly as Cosmos eagerly parted her lips, slipping her tongue into her mouth and twirling it around Ayu's tongue, her hand snaking up and grasping a handful of her breast excitedly.

Ayu wasn't even trying to find back, the assault on her breast only making her flinch a little as her fan massaged it. Finally Cosmos pulled away to catch her breath for a moment.

"S-Stop it Cosmos…"Ayu sutteres weakly, her face red.

Cosmos smirks and licks her lips, seeing Ayu stutter and blush just made her want her more.

"Only on one condition…." Cosmos said suddenly, still trapping the idol against the wall.

"W-what?" she asked.

"Come to my place tomorrow. You can only come if you're wearing a pink idol costume." she says, looking at her seriously now.

"W-What?" Ayu said.

"You have to say yes if you want me to let you go!" she says

"W-Wah...mmm.." Ayu hesitated. She knew Cosmos had the upper-hand,she couldn't very well escape her, and if she could she wouldn't be in this scenario.

"F-Fine…" she finally agrees. Cosmos smiles wildly in response.

"I'll see you tomorrow then.." she says, leaning forward and kissing Ayu on the cheek teasingly, giving her boob one last playful squeeze before she stepped away from the wall, unlocking the changing room door and taking her leave first.

Ayu slowly slid down the wall and onto her butt, left winded from her interaction with Cosmos.

The next day came quicker than Ayu had hopped. After her manager had scrambled to find her a pink idol outfit, she was presented with a pink and white costume that resembled closely to a maid outfit. Ayu had at first refused to wear it, but when she thought about what Cosmos might do if she didn't show up, she bitterly accepted the costume and was no wearing it under a long white coat that concealed her body as she left her house and got into the backseat of her private car, her personal driver already in the driver's seat.

The driver nodded his head respectfully and started the car, Ayu did not have to say a word as she texted on her phone impatiently.

Before she knew it, she had arrived at what she assumed to be Cosmos's home for the first time.

The driver stepped out of the car and hurried around to the back seat, opening the door for her.

"Would you like me to assist you to the door?" he asked.

"No, that's alright. Thanks." she said, waving her hand at him. He bowed and rushed back to the driver's side.

Ayu took one look at the house before her and sighed, bringing herself to take the first couple of steps, making her way up to the front door. As she lifted her hand to touch the doorbell, the door swung open before she could make any contact with it.

"Ayu! My lovely idol is in front of my very own home!" she says, taking her hand and pulling her inside quickly, as if she were afraid others would see, closing the door promptly.

"C-C-Cosmoms!? What are you wearing!?" Ayu snaps, her jaw nearly dropping in shock.

Before her, the skinny girl was wearing a tight lace white bralette that was nearly see-through, it had an open back and was cropped to sit just above her belly button, showing a nice tight stomach. Below she was wearing a shirt that barely made it half-way down her thigh it was so short. If she bent over you would probably be able to see her underwear.

"I wanted to wear something nice for you too...did you put on what I asked? Come on! Show me!" Cosmos urged, her eyes already jumping up and down her body.

Ayu sighed, shifting back a little. She slowly undid the belt of her jacket, pulling it off and unfolding it, revealing the maid-costume she had underneath it. It was like a short dress, fitting with a pastel pink collar, and thigh-high waistband. What was more was that it was shaped by a white push-up bra that made her breast look even bigger than usual, and Cosmos quickly noticed, nearly drooling at the sight.

"Why are you staring like that! " Ayu blushed, turning her body away slightly.

"Because your outfit is more sexy than I could have ever imagine!" Cosmos said, grabbing her hand and pulling her along.

"Where are we going!?" Ayu asked as she was pulled through the house. It wasn't until she started to look around that she realize how neat and clean everything only was it clean….but it had fan posters and figures of her spread all over the place, the idol was so overwhelmed when she began to notice her merchandise everywhere that she had forgotten to listen to the superfan's response to her question.

Cosmos pulled Ayu into her bedroom. She had just finished laying out freshly made sheets before the idol arrived, and she was likely never going to wash these ones once the idol laid on it.

Taking her hand she guided the distracted idol over to the bed, forcing her to sit down on it.

"H-Hey! Why are we going straight to the bedroom as soon as I get here!?" Ayu protested angrily. Cosmos leaned toward her.

"You honestly expect me to resist after seeing such a sexy costume? I'm so horny right now Ayu, and that's just from looking at you for a couple of seconds." she says, climbing onto the bed next to her, touching her arm.

"Ayu...I have one more favor to ask for today.." Cosmos said, gently taking her hand between hers, pulling it towards her body between her legs.

Shocked, Ayu suddenly snapped her hand out of Cosmos's grip.

"H-Hey! I never agreed to this!" she snaps, beginning to get up to get away from her, but Cosmos quickly grabs her hand again, looking sorrowful as she brings it to her lips, giving it a gentle peck.

"I please you all the time...and make you feel good right? Can't you do it for me...just this one time? Please….Ayu." she says, looking her in the eyes.

Ayu blushes furiously when she sees this kind of expression, feeling her heart race uncontrollably.

'What's the point in fighting it….I'm only going to be forced to do it…' she thought to herself, pressing her lips together.

"F-Fine…" she says, slowly sitting back down. Cosomos's sorrowful expression quickly changed and became more cheerful as she laid down on the bed, spreading her legs for the idol. The moment she did so the skirt rode right up on her stomach, exposing her bare pussy to the girl, as she hadn't been wearing any underwear the entire time.

Ayu's blushing expression got more deep as she saw Cosmos's pussy for the first time. Slowly she reached forward and touched the soft warm organ, which was wet and slippery to her fingertips. She pulled back at first as the girl's hips naturally twitched slightly from the feel. Biting her lip, she moved her hand forward again, her fingertip slowly pressing against her small and delicate bud.

"Mm! That place feels the best…" Cosmos says, leaning her head back slightly.

Ayu glanced up at her, her finger slowly pressing against the bud, earning another gentle moan from the fangirl.

As she slowly worked up confidence, she began pressing her finger down more, rolling the bud in small circles. She could see how Cosmos was getting more wet, her pussy glistening with clear fluid that was slowly dripping down her folds. She slowly leaned into it, her other hand moving up, slowly sliding a finger into the small hole.

"Ohhh yes! Ayu is making me feel so good with her fingers!" Cosmos praises, lifting her hips off the bed a little eagerly.

This little moan and reaction only encouraged the idol to move more, one finger rolling and flicking her clit white she inserted a second finger, feeling all around inside of the girl like it was an exploration.

"Mmhh! I-I'm gonna cum so soon! My-my favorite idol is going to make me cum!" Cosmos said excitedly, turning her head from side to side as she tried to fight off the pleasure, she wanted it to last longer, but her brain and body was just too excited. Her hips suddenly lifted from the bed even higher, Ayu could feel her pussy squeezing on her fingers, and feel more liquid gush out and get her hand messy as she orgasmed from her play.

The idol quickly pulled her hand away, blushing from the feeling and that she was able to make her do something like that so quickly.

Cosmos's hips finally crashed back down on the bed, her chest rising and falling quickly as she panted to catch her breath.

"H-hah, that was amazing. You've earned your reward!" Cosmos said.

"Reward? What reward?" Ayu questioned, tilting her head.

After catching her breath, Cosmos sits up and tackles Ayu.

"H-Hey! Get out!" she protested, but she could already feel the girl pulling up her dress, working the costume in seconds and stripping down her underwear.

'C-Curse my manager for finding such a skimpy costume!' she thought to herself bitterly as she tried to get out of her grip.

"Hold still, you'll like this." Cosmos said, pressing Ayu's face down onto the bed.

"W-WAIT!" she protested, but shuttered as she felt the girl's fingers starting to stroke her pussy, the pleasurable sensation making it harder and harder to fight back. By now, Cosmos knew all of her soft spots.

"Wow! You're already soaking wet! You must have turned off fingering me!" she teases.

"I-I didn't!" Ayu lies, trying to lift her head from the bed, but Cosmos quickly shoved it back down.

"Stay still!" she commands, lifting her hand from her head. Satisfied with the face down, ass up position she had put the idol in, Cosmos reaches beneath the pillow, blindly feeling it a pink rubber strap-on that she had hid there before-hand.

"No peeking my lovely Ayu." she ordered as she began to rustle to slip it on.

Ayu was obedient at first, but the more she heard Ayu fidgeting behind her, the more and more her curiosity grew. After she had took so long, she couldn't take it anymore, lifting her head and looking behind her, her eyes widening on what befell upon her sights.

Cosmos was on her knees behind her, strapped on her legs and thighs were tight rubber straps, which led to a long 8-inch pink strap-on cock that stood tall with a subtle curve to it.

"Y-You can't! I don't want that!" she yelps as she springs forward, trying to crawl away from her, but Cosmos was quicker, she grabbed Ayu by the hips and pulled her back in front of her, keeping her ass up in the air.

"I said no peeking! I'll really have to punish you now!" she says, lining up the rubber tip of the cock, rubbing it slowly, teasingly between her folds, letting it get nice and lubricated with her thick juices.

"Uaawwh C-Cosmos!" she mumbles quietly, shuttering as she teases her entrance.

"Be a good little idol and accept your punishment!" Cosmos yelles, thrusting her hips forward suddenly, shoving all 8-inches of the dildo inside her wet pussy, the toy sliding in with ease.

"Mmmmmmmmmm!ahhh n-no!" Ayu screamed, feeling her whole body tremble at the foreign object inside of her body. She squeezed the blankets between her hands, feeling how hard it was and how it felt like it was in her stomach.

"That moan was so hot Ayu, don't hide your voice." Cosmos said, beginning to pull her hips back so she could thrust forward again, smacking her ass in the process.

"Ahh! N-No! Cosmos! S-Slow down!" She moans hotly as she feels the dildo begin to slide in and out of her tight hole. She was so wet, she could hear all the lewd gushy sounds each time it slid inside of her pussy.

She flinched and gasped each time Cosmos slapped her ass, meanwhile Cosmos was hungrily enjoying watching the idol's ass jiggle and turn red each time she slapped it.

"C-Cosmos! I-It - it feels like I need to pee-" Ayu whimpered as the girl fucked her without mercy.

"That just means you're going to cum soon!" Cosmos said with a wild smirk, leaning over her body, her breast pushing into the idol's back.

She reached beneath her and started playing with her breast, her hands sliding down and pinching her nipples while she never stopped moving her hips, rolling them forward in circles as she pushed the toy as deep as possible inside of her depths, pulling her tits at the same time.

"I-I'm gonna-mmmhh c-cum" she whimpered weakly as Cosmos explored all over her body, even starting to lick the back of her neck.

"Then cum~" she whispered into her ear, suddenly leaning up and pulling the dildo all the way out of her hole, only to plunge it back in one swift and hard time.

Ayu lurched forward, her eyes widening and her tongue rolling out as she felt her entire body go up in shivers, her orgasm striking her mind and body hard as the waves of pleasure rolled up and down her body, eventually sending her into a calm sex-induced state, her entire body slumping into the bed as she struggled to catch her breath.

"There there, my precious Ayu. You'll get used to this the more we go at it." Cosmos whispers into her ear. It was the last thing she heard until she fell asleep.