“Is this the place?” Julia asked.

I checked the directions on my smartphone.

“Yep. Third floor, room #211, left.”

We walked up to the third floor. Room 211 had the same plain door as all the others in the hallway, with a carelessly handwritten sign “Erogenous research. Come freely ;)”. We knocked and came.

We really did not know what to expect. Somewhere between a mad scientist’s lab and a BDSM dungeon. It turned out to be a simple lab room with computers, some electronic equipment and two couches. There were four people working in the lab, not much older than us.

One of them, a tall, brunette, chocolate-skinned woman, smiled at us.

“Hello! I’m Amanda. Are you from the ad? The test subjects? Um ... Kate and Julia, right?”

“Um ... Yeah. That’s us.”

She smiled again. “Welcome. Would you like me to explain the procedure in detail?”

“Yes, please...”

She led us to the couches. We looked at the computer screens we could see with interest, but there were only some boring texts. Nothing explicit. No anime tentacles in sight. I put on my glasses; they helped a little, but still not a single character looked like he was hiding an erection between his legs.

“We’re doing medical research at our university,” Amanda began. She sat down next to us on one of the couches. Another woman of Asian appearance who worked in the lab watched her closely, listening and sometimes adding her comments to Amanda’s. Her name was Min. There was a man, dark-haired, probably of mixed race, somewhat handsome, doing something at another table, and another, pale and thin, tinkering with the electronics. Their names were Tim and James.

“Since the famous Kinsey research, people have struggled to improve sexual experiences,” Amanda continued. “Some results have been achieved, mostly in the realm of body-oriented and behavioral psychotherapy.”

“In other words, pretty unreliable and unsatisfactory,” Min added.

“Exactly. We are following a different line of research here. Through direct nerve stimulation, we aim to create and strengthen erogenous zones in humans.”

I and Julia nodded. So far everything was clear. After all, we had been medical students ourselves.

“We’ve made some great advances here,” Min said. “We can do that on virtually every part of the body, male and female alike.”

“We’ve done tests on ourselves first, of course,” Amanda said. Min smiled and touched Amanda’s elbow with the tip of her pencil. Amanda twitched, blushed and gasped. “MIN! ... Ohhh ... Yes, like that.”

We watched with wide eyes.

“So now we are expanding our testing to a wide range of people. Thank you for volunteering. As promised, you’ll each receive a $50 reward for your participation. Unless you change your mind. Have you?”

We giggled and shook our heads.

“No change!” I said.

“Nope! I’m in.” Julia added.

“Excellent. Then please sign the papers here and lie down on these couches.”

“Do we have to ... um ... strip naked?”

“Not necessarily. But it would help if you did.”

Me and Julia exchanged glances, laughed, signed the papers and started to undress. We were excited and strangely high. Everything was a bit surreal.

“Nice lingerie,” Amanda said, looking at us approvingly, and started pulling equipment from the shelves of electronics. We got undressed and lay down on the medical couches first. They were uncomfortably cold to begin with (how do they make all those medical couches?), but quickly warmed up. Tim put on us some strange, custom-made headgear and glued electrodes to various parts of our bodies. Nothing too unusual so far.

Min moved two large screens in front of us and rotated them. Schematics showed the outlines of our bodies.

“You can see the progress here,” Min said. “That way it won’t be so boring for you.”

“Phase one. Mapping your actual erogenous zones,” Amanda said, typing on her computer.

We were expecting ... well, maybe some electric stimulation. There was none. Just a few places on the body diagrams highlighted with different colors and intensities. I looked intently. Oh yes. The crotch, of course, the nipples, the earlobes ... the neck, the toes ... Next to me, Julia looked at her diagrams.

“Good work!” she giggled. “You even got my weird waist spot right!”

“Of course,” Min nodded. “This is all you have now. Blue zones give you arousal, red zones trigger orgasmic release. Anything new and unexpected, girls?”

We studied the schematics.

“None.” “Nope. We know them all. Perfect mapping!”

“Okay.” Amanda smiled. “Phase two, creating new arousal zones. Where do you want your new special places, huh?”

“Wherever!” Julia said enthusiastically.

We had a quick chat and started picking spots on our bodies. Under the nose. On the wrists, the elbows ... and maybe on the stomachs. Amanda typed in the coordinates, and the equipment connected to us clicked quietly. “Test #1, Zone #1,” Min whispered into her headset microphone and pressed the key on the keyboard. We felt nothing. “Zone #2... #3... #4. Done. How is it?”

“Mmm ... Nothing so far.”

“Of course. The procedure itself is not felt in any way. Try touching the spots.”

I rubbed under my nose and immediately felt butterflies in my abdomen. I touched my belly button and the butterflies turned into a tornado. I shivered. “Wow...” Next to me, Julia giggled, touching her wrists and elbows.

“Excellent. Phase 2, removing the created zones.”

“Leave the one under the nose, I like it!” I asked.

“Okay.”

Amanda and Min erased our extra zones. Then they erased some of our usual ones, and our necks and collarbones lost their erotic sensitivity. Before we could get worried, they put our zones back.

We lay on the couches, looking at each other, touching our bodies and giggling excitedly. We’d touch each other, but the couches were too far apart.

“Test #2, creating the release zones,” Amanda said. She rubbed her elbow and gasped. “Where do you want them?”

We picked again. Amanda was typing into the computer again. Min was typing into the microphone just as quietly. She began to name the test numbers. We felt nothing again. Julia touched her thigh and shuddered, clenching her legs tightly, and I was taken aback for a moment by the sight of her. Then I touched my insteps and it hit me like a tsunami, feeling stronger and stronger with each wave. I arched my back, struggling to breathe. Tim adjusted some settings, bringing a much-needed wave of relaxation that made me settle down on the couch.

We lay side by side, catching our breath.

“Wow...”

“What a miracle...”

“I would pay a lot for this. People would pay. You are rich, guys!”

“Thanks!” Amanda smiled. “Phase 2, removing the zones...”

And we were back to normal.

“Basically, that’s all...” Min said. “We’ll remove the electrodes now, and you can get dressed.”

“Wait!” Julia asked suddenly. “May I suggest?”

“Go ahead.”

“How many zones can you create at once?”

“Virtually unlimited. We could cover your entire body.”

“Do it, please! I want to know what it feels like!” Julia begged.

I imagined the feeling and gasped. “Yes, please! I’m in, too!”

“Well ... Okay.”

Amanda began typing the sequence. They’d recorded our current zone maps to restore them later, and they’d drawn the new map. The diagrams before our eyes showed elaborate patterns. No part of our bodies remained black. I shivered in anticipation.

“Get ready,” Amanda said. “The recording sequence will take longer this time, about twenty seconds.” And she pressed the button.

An unfamiliar, faint sensation quickly spread from my fingers and toes to my entire body. The new zones spread out, crisscrossed and intertwined, forming a lace pattern like snowflakes. The strange feeling lasted and lasted. It wasn’t an orgasm, it didn’t feel like anything familiar. It was new. Strange and exciting. Like a whisper from above. From all sides. Like an abstract mist in the body. Julia groaned on the next couch.

All four guys looked at us in amazement.

“We should have planned this ourselves,” James said. “Looks like we’re on a new and promising path.”

“Um ... girls, try to move your bodies. Carefully, please,” Amanda suggested. “This is something new, we can’t predict the sensations.”

We moved our fingers and toes, lifted our arms, touched each other in different places ... it was arousing everywhere, and in some places there were wonderful orgasmic releases. Julia moaned again. I squirmed on my couch.

“Could it be ... a mild seizure, huh?” Amanda speculated. “Are you okay?

“Unbelievable ... I’ve never felt anything like this before,” I whispered. “Go on, go on!”

“Um ... No. Sorry. It might be too much for the first time. We’ll roll it back now.”

Julia and I almost cried in disappointment as Min typed in the sequence.

Then, as we were in the middle of erasing the zones, an electronic block in the corner sparkled and the screens in front of us went dead. Tim and James cursed and rushed to the failed equipment. My heart dropped.

“Don’t worry, girls,” Amanda assured us. “The experimental equipment is like this. We had it before. They’ll fix it soon, and we’ll complete the rollback.”

“Just lie back and relax for a while,” Min added.

Julia and I exchanged glances. While the boys repaired the block, we carefully stretched our bodies and ran our fingers over them. The zones were half erased, half of the spots were back to normal, but another half, scattered randomly, were even stronger...

Our eyes widened. Julia pressed her neck and arched her back with a moan. I stroked my shoulders and shivered as a strong arousal Oh God. We slowly began to trace spots.

Amanda watched us curiously, rubbing her elbows absentmindedly. “Unplanned research like this ... is not a bad thing. Have you checked your own initial zones yet?”

Julia giggled, squeezing her thighs and the insides of her knees, shuddering with the bliss of the releases. I checked my clit and the sensation was wonderfully fresh.

“Yep. Everything’s in place, and much better.”

We were still exploring when they rebooted the system and scanned us again. The zone maps really were half erased ... but ... the zones were moving slowly!

Amanda and Min frowned.

“I never saw anything like that ... The zones were always fixed ... Well, let’s try to complete the rollback...”

Twelve seconds later, the schematics were almost as they had been at the beginning. Except ... sparks of color were still wandering over our bodies. The spots were not too big, they did not last long ... but there were always half a dozen extra spots somewhere.

And Amanda and Min were unable to shut them off.

“What’s going on here...”

Julia and I lay back and looked at each other, tracing spots with our hands and smiling mischievously. Sometimes new zones appeared, sometimes some disappeared ... everything happened by itself now. And we felt wonderful when we hit them.

Tim frowned and worked on the keyboard with both hands, while James tried some tricks with the electronics. But they got nowhere. Amanda finally turned to us.

“Sorry, girls. That’s just like some classic superhero initiation scene!” She smiled weakly. “Looks like we can’t vanquish them at this point. Sorry again. We’ll double your compensation and invite you to the series of extended experiments. We have entered uncharted territory.”

“Of course!” Julia giggled, tracing the arousal spot crawling up her side.

“I don’t care!” I added, shivering with a sweet orgasm. “I like what you’ve created!”

“We don’t mind,” Julia concluded. “We’ll come for your research, but so far I’m happy with the result!”

We’ve signed more papers, agreed on a date for our next visit, and collected our money. They’ve followed us with uneasy glances as we’ve dressed and walked out.

Julia and I grinned at each other all the way home (I didn’t tell that yet, but we were roommates). We wanted to keep touching on the street, but decided not to give everyone a free show. But all the time we were tracing the spots that slowly appeared and disappeared on our bodies. We began to feel where they were without touching them. A kind of new perception. Somewhere on the right. Somewhere under the leg ... We kept giggling like girls on mushrooms until we realized that this new erogenous perception was about to reach new places on our bodies. We hadn’t even tasted what it was like down there ... Oh my! We couldn’t wait to get home and get started.

Once inside, Julia and I took off all our clothes. In the shower, we splashed around like little children in water, trying to cover all the new and unknown places, shuddering at every arousal. We touched and kissed each other, massaged each other’s backs and breasts and sides and knees, trying to get all the zones. It was incredible that Julia and I had been friends for many years, but I had never wanted to try anything like this with her before.

We fell asleep, embracing each other naked, and slept well, twitching from time to time with pleasure when a wandering spot crawled to a point of touch.

The next day we went to our usual classes. We started to get used to our new sensitivity, so that we were quite sure that we could attend lectures without squeaking the whole auditorium with sudden orgasms.

We greeted our friends, took our seats, and began to take notes from the lecture. We managed to concentrate for almost an hour. Julia and I were so sensitized to the erogenous zones that the slightest friction was arousing. We were constantly wet. But it was bearable.

Soon there was movement in the auditorium, the girls began to put on their jackets, the boys theirs, and everyone dispersed in different directions for a break. Julia and I relaxed in our seats.

“This is pretty exciting,” she admitted. “But also uncomfortable.”

I nodded. “I’d like to be able to turn it off and on at will. But let’s make a release if we could...”

We found our current release points and shuddered for several minutes, moaning softly. Then we felt better, the tension eased for a while.

“Let’s go for a lunch,” Julia suggested.

We got up and walked out. It was just the next hall, all our classes were in this building today. The hall echoed with the sound of footsteps and the slamming of lockers. There was a festive atmosphere in the dining hall. We stood in a very slow moving line. Julia and I touched each other, finding new zones of arousal and then triggers. A sweet release followed ... We giggled. It felt a little inappropriate, we were like kids getting off in line.

Our friends, Sarah and Martha, took other seats at our table. They looked at us curiously.

“What’s up, girls?” Sarah asked. “You’re so excited today!”

“Um ... remember that lab test ad? About the erogenous zone remapping?”

“Yep. We signed up for tomorrow night. Was it?”

Julia giggled. “It was! Come on girls, you won’t regret it!”

“Hey, don’t scare our friends!” I objected. “Okay guys, it really was. But you can’t imagine how cool it was!”

Sarah and Martha exchanged looks.

“At least try it!” Julia said. “Tell us the next day if it wasn’t a good idea!”

The girls bit their lips, but didn’t want to argue with us.

At that moment, a wandering spot of excitement crawled to my fingers. I do not know what came over me. Without a second thought, I pressed my fingers to Martha’s forearm, which was next to mine ... and felt the spot leave my fingers, crawling to her body. Martha jumped and looked at me with big eyes. Then she touched the spot on her forearm and blushed.

“Wha ... What is that?!!”

“I don’t know,” I sighed guiltily. “Sorry. It was just a weird impulse on my part. I’ve never done anything like that before.”

We both giggled hesitantly. Martha wasn’t angry. “Don’t worry,” she said quietly, watching Sarah and Julia talking in front of us, not paying attention to what was happening between Martha and me. “Just ... Don’t do it again, okay?”

She rubbed her forearm again and smiled a little sheepishly.

Julia and I looked at each other in surprise. What are these excitation and release spots? They almost behave like living things with a mind of their own!

“We have to tell the guys in the lab about this,” Julia said and I nodded.

The next time we went to the lab, we stripped naked right away. We’ve started to get used to it. We lay down on the couches, they stuck three times as many electrodes on us and turned the system on. The diagrams showed the wandering spots over our bodies. They had not grown in size or number since the last time, but they had not diminished either.

“Your new state seems to be stable,” Min nodded and typed in the notes. “Your old zones are increasing their sensitivity and moving around a bit, but they are staying in place so far.”

I grinned and ran my fingers over Julia’s right shoulder. Julia stroked my left knee. The guys in the room followed the wanderers with their eyes.

Amanda started typing the sequences, deleting the crawling zones ... they promptly disappeared, but more appeared of their own accord. Amanda frowned.

“What if we try to add more instead?”

They added a handful of simple stable zones around our bodies. And we all watched in surprise as the wandering zones crawled over to the stable ones and started ... like ... nibbling on them.

“They look alive!” Min exclaimed.

“Yeah,” I said. “I have something else to show you. Who would dare to participate in a little experiment?”

They exchanged glances and Min came closer. I did not need to look at the schematics to feel the spots. I pressed my knee against Min’s and felt the already familiar sensation as the spot crawled up her body. Min jumped and blinked, then pressed her knee a little hesitantly. Her lips pouted and I was astonished. Wow! That was a cool mini-orgasm!