Somewhere on the next aisle Sakari spoke up. "Gah, that's it, I'm done. I don't know how you do this all day, Ko-chan" She started struggling with her armbinder and grunted a little.
Hinari smirked as she looked over "But Sakari-chan, you were so happy when you got this kind of outfit from the attendant and you were looking forward to wearing it all day. What changed?" She prodded Sakari's cheek a little and groped her bare chest with the other hand.
"What changed is it's been over an hour and a half and my arms are tired. And my shoulders are tired, and my feet are tired. And there's someone who keeps groping my chest whenever she gets a chance." Sakari pulled away from Hinari's roaming hands and continued complaining.
"It's so disappointing Sakari-chan, who will I grope other than you? Ko-chan is locked up in metal now, and I don't have a big enough death wish to try it with Matsuko." She made a big show of sighing heavily and hanging her shoulders and head.
Naruyo ignored the theatrics and directed Sakari, "Turn around." Sakari did as asked and soon the laces on her armbinder were loosened enough for her to pull her arms out. She immediately stretched and rotated her shoulders and gave a groan of relief as she dropped the armbinder to the ground. "Thanks, finally, that feels so much better." Immediately after, she reached up and started unbuckling more of her gear, causing her collar and harness to fall to the ground one after another.
"Next mission, find some more normal clothing." She immediately went into a nearby stall and grabbed a leather skirt and tube top to wear.
"Wait, Do me next! I'm tired too!" I walked up to Naruyo and did a little struggle just like Sakari did.
She smiled but shook her head. "Can't help. Locked tight." A little pat on my head and she looked away, over towards where Sakari was swapping her tall boots for some flatter ankle boots.
"Poor Ko-chan, no one can help you out except Matsuko. Have you forgotten all the locks dangling from your body?" She flicked a lock attached to a buckle across my chest and I looked down. Ah, that shopkeeper locked my armbinder to keep me from escaping, didn't she. I walked over to Matsuko with pleading eyes and she just smiled at me.
"Not a chance, Ko-chan. You're just going to have to deal with it until I'm ready to let you out. I promise I will...someday. Of course if you can get out on your own, I won't interfere." She patted my head and chuckled to herself.
Matsuko... you know full well that's impossible, don't you? Every single piece of gear on me is locked tight -- most with more than one lock! I struggled a bit with the armbinder, but the compounding layers of bondage made it so I could barely even get one centimeter of movement from my arms. All I could do was watch with dissatisfaction as Sakari traded all of her bondage gear for a more normal outfit and returned to the group.
"Ah, that's much better. Staying in bondage long term is definitely not for everyone." Sakari was still stretching out her limbs and talking nonchalantly. She looked over at me and acted surprised. "Oh, I thought you were tired too, Ko-chan? Why didn't you change out of your gear like I did?" I ignored this blatant provocation and looked the other way with a hmph.
"If you tease her too much, you might regret it, Sakari." Hinari whispered into her ear, recalling how she was tricked into a pair of vibrating panties after teasing Ko-chan earlier.
* * *
"I've decided. Naruyo, you haven't tried out any kind of gear since we came, have you? Let's pick something out for you, it would be a shame for you to not experience anything kinky at the bondage con, right?" I ran up to a nearby stall and looked at the contraption laying on the shelf. It was a waistbelt with wristcuffs attached to it.
"That is true, Na-chan, you have to try something out too~" Hinari was eager to share some of her suffering with the others and picked up the belt. "This would look so cute with your dress, don't you think?"
"Not interested. Moving on." Naruyo shut down the idea coldly.
"Oh, Na-chan, are you too much of an ice cube to try anything new? I didn't know you were so boring. Just wait till I tell people that you went through a whole convention without trying a single item out." Hinari started to mock her, and while it wasn't clever at all, it seemed to be effective.
"Fine. Give it here." She grabbed the device and buckled it around her waist. She allowed Hinari and Sakari to buckle the wrist straps around her wrists, and then she experimented with the device. The wrists were attached to the belt by thin cords, which were free to extend up to a certain point. When she reached too far though, the reel would reverse, and would only retract until her wrist got back to her waist again. After a few seconds it would release, and allow her wrist to move away again.
"So it works just like a seatbelt, I guess? Pull too far and it locks up." I mused to myself as I watched her extend and retract her arms a few times. It was nice to see her having a bit of fun and showing some emotion instead of just waiting for someone to tell her what to do like she normally did.
"Fun device. I insist you join." She held up another set of cuffs and advanced towards Hinari, who tried to back away but was stopped by Sakari.
"Ah, you traitor! Don't think I'll let you get away with this!" She shouted as Sakari held her arms and helped Naruyo put the belt onto Hinari. A few minutes later, all three girls were wearing matching waistbelts.
"You girls are so cute when you match, huh?" Matsuko watched as an uninvolved party from the side, and only jumped in when it was all over. "You aren't gonna get one for yourself, My Lady?" I chimed in and motioned to more of the waistbelts on the shelf but she just shook her head while smiling, and no one else made a move to help. With my current state, I was in no position to do anything, so if the other three didn't want to help, there was no way I could force the issue.
* * *
I was still a little unhappy that Matsuko hadn't joined in the fun at all and I was looking for a chance to change that. We had spent a few hours browsing the stalls and watching various escape tournaments, but I still hadn't managed to get Matsuko involved in anything. While watching another live demonstration show for a torso harness with mittens, I decided I had to take the chance.
"This torso harness will hold your sub tenderly, but also securely. The mittens on the back will ensure that, even when not locked, the wearer will be completely incapable of freeing themselves without help. It's also easy to use and apply, I would say that anyone could use it, no matter how inexperienced! Allow me to prove that by trying it out on one lucky audience member. Who would like to try?"
"Now's your chance, My Lady, you have to join in and have some fun with the rest of us!" I said this before dropping my knees a bit and using all my weight in a desperate lunge to push Matsuko from behind. She wasn't expecting such a sudden movement and stumbled forward a few steps out of the crowd and was seen by the vendor. "Ah, what a beauty in the opera dress, let's hear it for our volunteer!" I could see a flicker of flame surrounding her, but it quickly disappeared when she turned and saw me.
Matsuko smiled at me, mouthing "I'll deal with you later, my dear." But, then made her way to the stage. Hinari wrapped her arms around my shoulders and whispered, "Wow, Ko-chan, how daring. Even I don't dare to do something like this to the vice-president."
"A bold move. Surprising." Naruyo registered her agreement as she watched.
I wasn't sure if Matsuko was mad, but I was happy she wouldn't be left out and spend the entire convention just watching from the side at every occasion and not getting involved. I eagerly awaited to see what happened next. I'd never seen Matsuko bound or restrained or in a vulnerable position, so I was greatly anticipating this moment.
"Well, miss, I've never tried to put this on someone wearing such an elaborate dress before, but there's a first time for everything. Please step over here and turn around." The vendor was acting nicely towards Matsuko and started to untangle the harness.
"I have a question though, if you don't mind. You said before that everyone could use this harness, no matter how inexperienced. I've never used one of these before, so I'd like to see if that is true. Could you guide me through putting it on someone? I feel this would be an even better demonstration than your original plan." Matsuko offered her own idea for the demonstration to the vendor.
The vendor stopped and thought about it for a minute and then spoke, "Well, it's an interesting idea I had never considered. Let's get a second volunteer and I will assist you to put it on them." She started looking out into the audience but no one stood out immediately.
"If you're so confident, why not offer yourself? No need to wait around or force someone to cooperate. We can start right now, just tell me how to begin." She reached for the harness in the vendor's hand and snatched it away while the vendor was still considering. "So, I assume step one is for you to turn around with your arms out. What do I do next"
The vendor was a bit railroaded, and finally decided to try and make a sale instead of a scene. She held her arms out and started to narrate. "First, hold the harness up in front of me and pull one of the torso straps around my back. Once you have the first strap tightened, it gets a lot easier since you won't need to hold it up anymore."
Matsuko easily buckled the first strap above the vendor's chest, and followed with more straps below her chest and around her waist. "I assume this part is next?" She hiked the vendor's skirt up a bit and grabbed the strap between her legs. With a jerk, she tightened the crotch strap, eliciting a sensual "Ahh~" from the girl. More straps tightened over her shoulders, and she spoke up with more instructions.
"Next you have to buckle the cuffs over my--" She was interrupted by Matsuko already being one step ahead of her, buckling cuffs over her upper arms that pinned her arms to her sides. With a twist, she grabbed one of the vendor's wrists and pulled it up to the middle of her back, where she pushed it into the waiting mitten and buckle. A second later, her other hand was also caught and buckled into place.
Finally, she turned the girl around by her shoulders and buckled the collar tightly. She leaned in close to the vendor and said, "You were right, that was easy. Next question. Does this harness lock shut?" The vendor gave a cursory reply "Yes, each buckle has a slot for a--" *click* *click* "Hey, wait--" *click* "I didn't say you could--" *click* *click* "Stop, I don't have--" *click* *click* She finally stopped when Matsuko latched the final lock into her collar and seemed like she was about to cry.
"You've been a wonderful demonstrator. I want five, one in extra small." Matsuko leaned in and gave the girl a peck on the cheek.
"Wait.. one in extra small? Then that means…" I put together the logic in my head before Hinari whispered in my ear, "Yep, I sense a lot of your current position in your future. I hope you're ready~"
Matsuko tucked some bills into the vendor's harness, collected a bag of gear, and left the stage. "Wait, how am I supposed to get out of this?" The vendor yelled after Matsuko but was summarily ignored. The surrounding crowd seemed reluctant to help the vendor out for fear of angering Matsuko.
Matsuko came back in front of me and smiled warmly. "Ko-chan, shall we go for a walk?" "Um.. are you mad, My Lady?" "Of course not. I just got some new toys and got to have some fun with that cute vendor." She handed the bag to Naruyo and scooped me up in a princess carry and rushed off down the aisle ahead of the others.