Now this was embarrassing. Mia was only staying over at her friend's house, how did she end up with this? Actually, she knew very well. She was quite competitive when it came to video games and started agreeing to bets without paying attention to the wager. She remembered hearing Claire say "Winner gets to tie up the loser." but didn't care to actually think about it. Who knew her brunette friend would be prepared?

It was supposed to be a normal sleepover like the two of them did almost every weekend. Claire already moved out of her parent's house and lived in her own small flat. On Fridays, Mia would come over, they'd watch movies, play video games and discuss the happenings of the past week. But this time was different. During one of their - usually harmless - wagers, Mia didn't pay enough attention to what her friend was saying and ended up having to obey.

Mia still wore her pink underwear and simple white shirt, a getup she usually slept in. She sat on Claire's bed, nervously wriggling her thumbs. Her athletic friend stood in front of her, a mischievous smile on her lips, wearing black panties and a black buttoned shirt, a length of rope in her hand which she had pulled from one of the lower drawers of her nightstand.

"Uhm, listen, I don't think this is a good idea.", Mia stammered, "I wasn't really paying attention to--"
"What, are you scared?", Claire interrupted her blonde friend, "It's me, Mia, I'm not gonna hurt you or anything. And a bet's a bet."
Mia had to admit that she had always insisted on Claire keeping her promises and wagers in the past. Maybe it was only fair if she had it her way for once.
"Okay, fine... but be careful, alright?" Claire grinned and hopped onto the bed behind Mia, pulling her hands behind her back, beginning to encircle her wrists with rope. Mia was surprised at how orderly the short-haired girl worked with her. Video games and sport events aside, she wasn't someone to be this concentrated. In fact, Claire was more of a slacker. She only survived in school because Mia was generous enough to help her.
Claire knotted the rope off, reaching past Mia into the drawer, pulling two other lengths of rope from it. She tied Mia's arms to her body, passing the rope above and below her friend's large breasts. Mia winced and looked down at her own body. Her chest stuck out more than usual, making it appear even bigger. Claire had always admired Mia's bosom but not to the point of being jealous. She always said that large breasts would just hinder her and cause back pain.
"Everything okay?" Mia snapped out of her train of thought. She really had a poor attention span.
"Huh? What?" - "Too tight?"
Mia shook her head. "It feels weird though."
Claire grinned, which Mia couldn't see since she was still sitting behind her. "You'll get used to it. You'll see." With that, she grabbed Mia's legs and pulled them onto the bed, making her tied friend lay on her back. With more rope prepared, she started tying Mia's soft, beautiful legs firmly. Once around her ankles, above and below her knees. She knotted each rope securely and orderly in front so Mia couldn't reach any of the knots with her hands on her back.

"Well? How do you feel?", Claire asked, looking down at her captive and stroking her hair.
Mia wiggled around, testing her bonds. The sly girl had done a really good job. "It's still weird... a really strange feeling..." Mia tried moving her legs but the rope was tight, yet not uncomfortable. A strange heat was forming between her thighs. Mia's cheeks lit up red. Was she getting aroused by this?
"Feels good, doesn't it?" Something was different in Claire's voice, but she didn't get to look at her as she was sat up, her back turned to Claire once again. Her friend reached down to the drawer, but Mia couldn't see what she was taking from it.
"We're not quite done yet, though." A shiver ran down Mia's neck. Claire's voice was only a whisper now, but she whispered almost directly into her ear. Mia pulled at the ropes. She was starting to feel uneasy, yet more and more aroused. Or maybe it was because she was becoming aroused that she shifted around so much, or at least tried to.

"Open your mouth." Mia could almost hear her friend's grin. She tried to pull away slightly, bending her body forward.
"H-hold on, you're gonna gag me!?" She turned her head to look at Claire, who met her gaze with another mischievous smile. She held a pink ball-gag in her hand.
"Why not? It's no fun without the gag, is it?" She put her other hand on Mia's chin but stopped, hesitating, reflecting on the situation.
"Unless... you want me to stop?"
Mia stopped her nervous wiggling and thought. She really wasn't prepared for this kind of thing and she was completely inexperienced. Also, she had no idea, Claire was even into this stuff. On the other hand, she couldn't deny that it was exciting. And this wasn't anybody, it was her best friend. She was in save hands, she could trust her.

Mia gulped. "Whatever... go ahead. I trust you."
Claire still hesitated for a moment. Mia's words sounded strangely... emotional. But she had already gone so far. Her fantasy was about to be fulfilled, partially at least. Swallowing her doubts, she pushed the rubber ball behind Mia's teeth, buckling it tight behind her head, careful not to catch any of her friend's silky hair.
Mia decided to test the gag that was forcing her jaws apart. She screamed, but it only came out muffled. The rubber ball did a good job silencing her.

Claire watched her friend from behind, heard her muffled speech, saw her slight struggling. She bit her lip, trying not to lose her composure. It was a miracle she even got her this far. Claire barely noticed her fingers had started to caress her own breast. Seeing her beautiful friend like this made her feel so good, almost better than all those times she had put herself into bondage. Slowly, she put her arms around Mia, hugging her from behind.
Mia's heart skipped a beat. She felt Claire's modest but none the less soft breasts pressing against her back and bound arms. Claire's bare legs pressed against hers from both sides.
"Thank you for doing this.", Claire whispered, "I feel stupid now having asked you for it."
Mia tried to say something calming or meaningful but was soon reminded she couldn't. Instead, she just let herself fall against her friend, laying in her strong arms. She felt the warm feeling between her thighs beginning to intensify, her heart beating faster and she couldn't help but let out a muffled sigh.

Now Claire was the nervous one. She had gotten this far and Mia seemed okay with it. She felt like she should say something to break the awkward silence but she didn't know how much she could tell her. It was pretty obvious by now that this was her fetish, but could she really talk about it? Could she talk about her true feelings for her bound friend? Or rather the feelings she suspected to have for her. If she were to do that, how would Mia react? Would she understand or would she stop trusting her? Claire bit her lip. After a while of thinking, she finally opened her mouth. "Do you want out?"
Mia turned a bit in Claire's arms, looking up at her with a questioning look. Apparently she hadn't realized that a tiny trace of drool had dripped down on her white shirt.
"I mean... did you have enough? Should I let you go?"
Mia thought for a moment. It was weird but she somehow didn't feel that nervous anymore, the bindings actually gave her a strange sense of security, while she lay in Claire's arms. And it was still quite exciting and new. Though in the beginning she couldn't wait till it was over, she didn't seem to find a reason to stop now.
She mumbled a denial and shook her head slightly. Claire could feel her heart beating harder at the sight of that adorable, yet tremendously sexy girl tied up in her arms. She couldn't help it. Rubbing her legs against Mia's bound thighs and pulling her in even closer, she kissed her captive's forehead, stroking her silky hair.
Mia closed her eyes and smiled through her gag the best she could. Right now, this was the best sleepover she ever had.