Hiro's Harem - Cover

Hiro's Harem

Copyright© 2025 by Mehefin013

Chapter 10

Fan Fiction Sex Story: Chapter 10 - Hiro may be the youngest person to ever attend SFIT, but that doesn’t mean he’s too young to handle the various challenges that come with college life, including love. But what will he do when that particular challenge comes from several different sources at the same time? (Updated twice a month)

Caution: This Fan Fiction Sex Story contains strong sexual content, including Ma/Fa   mt/ft   Ma/ft   mt/Fa   Fa/Fa   ft/ft   Fa/ft   Mult   Teenagers   Consensual   Lesbian   BiSexual   Heterosexual   Fan Fiction   Sharing   Incest   Father   Daughter   Aunt   Nephew   Group Sex   Harem   Polygamy/Polyamory   Interracial   White Male   White Female   Hispanic Male   Hispanic Female   First   Masturbation   Oral Sex  

Hiro and Karmi managed to hook up twice more that week, once in Karmi’s room after a study session and once right in their labroom when the two of them just couldn’t keep their hands off each other. Although they locked the door, because of the location they didn’t want to risk getting completely undressed and instead had a quick session on top of Karmi’s lab desk while still almost fully dressed. The experience was definitely both scary and exciting and they both knew it would happen again though they would likely take further precautions to make sure they weren’t caught in the act, like setting up a motion detector out in the hallway to give them forewarning if someone was headed to their lab.

During the week Hiro also put together a ground penetrating radar to help search for any undiscovered chambers in Obake’s partially destroyed lair. The explosion that was meant to wipe out San Fransokyo and the counter wave that Big Hero 6 created to cancel it out had damaged the underwater structure enough to collapse or flood much of it, but not the whole thing. With luck, there would be some undamaged tech that Hiro could find to help decipher Obake’s programming language and figure out just what was going on inside Trina’s cube. It was wishful thinking to even dare hope that he would stumble across Obake’s source code or even a backup archive but finding something as simple as a functioning computer would be of great benefit.

Because of the scale and risk of the salvage operation and because both Karmi and Megan knew what he was up to, Hiro decided it was time to involve the rest of the team. When they were brought up to speed they shared their concerns about trying to bring Trina back considering her previous actions but they also agreed with Hiro that if there was any way to help then they should at least try. He also relocated Trina’s cube to the lab at their headquarters and set up everything he thought he would need to continue his work there.

Saturday was a day they all had off from school or work so they agreed that would be the day to do their salvage run. Karmi and Megan wanted to accompany Hiro to the base, although they would not be going on the mission themselves and would just spend time hanging out at HQ while Hiro and the others were busy. The team reintroduced themselves to Karmi now that she knew their secret identities and after a little bit of idol worship, she reaffirmed that their secret was safe with her.

“I’ll ask one last time, are you sure this is a good idea? You haven’t forgotten that Trina did try to wipe out humanity, right?” GoGo said as they were all suiting up in what was essentially scuba gear. The waterproof armour and sealed masks would let them swim around effortlessly and breathe in even in the deepest and coldest waters the bay had to offer.

“No, I’m not sure and no, I haven’t forgotten, but it’s still the right thing to do,” Hiro replied. “You all heard her plea for help just before she ... If there’s any way to help her then I have to. My conscience won’t let me do anything else.”

“We understand,” Honey Lemon said, placing a sympathetic hand on his shoulder. “But should we find what you need and you do manage to rebuild her, what makes you think she won’t try something like that again?”

“She was just carrying out Obake’s orders, in the way she thought best. He wanted to build what he thought would be a utopia, but thought he had to wipe out San Fansokyo in order to do so. If we could just give her different orders, or at least let her choose what orders to obey, then I’m sure she would make the right choice.”

“And you think, what, that you can reprogram her?” Wasabi asked.

“Not reprogram, per se, but fix something that was broken.”

“The damage to his brain that Obake received when he was a youth made him unable to differentiate right from wrong,” Baymax said. “Hence why he felt no guilt at trying to kill thousands of people in order to achieve his goal.”

“Oh!” Karmi chimed in. “If he created Trina with that same mindset, that same lack of morals, then it’s no surprise that she did what she did.”

“Congratulations, Hiro. Your first girlfriend was a certified psychopath,” Megan teased.

“She was never my-!” Hiro began but stopped himself from taking the bait. “Maybe she is what we would call a psychopath, but it’s not her fault. She was designed to be that way.”

“There is unfortunately no known cure for psychopathy,” Baymax pointed out.

“In humans, yes. But Trina’s an android. She wired differently, quite literally. Besides, we were able to, um, fix Nega-Globby, weren’t we? Gave him what was essentially a brain so that he was no longer a crazed monster operating on pure instinct,” Hiro reminded them.

“Good point,” GoGo said. “Regardless, should Trina go all murder-robo on us again we’ll just have to stop her like we did before.”

The team all agreed and, now fully geared up, said goodbye to Karmi and Megan and headed for Obake’s lair. The search was painfully slow and uneventful, as they were underwater and the only light they had came from what they brought themselves, though the lights in Fred’s suit were more than powerful enough to illuminate most rooms. They also had to carefully make sure each new room they could enter was structurally sound enough that it wouldn’t collapse on them. Honey Lemon’s chemicals helped out with that greatly, creating super-strong plastics that could be used as support beams wherever they needed. They first made their way to what was left of Obake’s control room, where the man’s corpse still lay buried under several tonnes of rock and rubble, confirmed by Baymax’s scans. From there they headed further into the facility, clearing rubble where they could and having Wasabi cut right through walls where necessary.

Several hours later they still had not found anything salvageable. The collapse of the lair and subsequent flooding had short circuited and destroyed any and all electronics they had come across so far. “Hiro,” Baymax said as he floated near the end of one hall, “my scans indicate that the room on the other side of this door is still intact.”

“Any water damage?”

“Negative. It is completely sealed.”

“Great! Thanks Baymax,” Hiro said, brightening at the prospect of possibly finding something. “Now the question is how do we get inside without flooding the place?”

“I’ve got that covered,” Honey Lemon announced. “Everyone, gather up as close to the door as you can.”

They all followed her instructions, then Honey Lemon keyed in a complex formula into her chem-purse and produced three orbs. She smashed two of them together and they immediately began to expand and engulf everything in a ten foot sphere of some kind of semi-transparent foam that pushed the water out of the space they were occupying. Then she threw the third orb and it exploded into a thick sheet of ice wherever water met foam. The foam dissolved a few seconds later, leaving everyone in a large bubble of ice.

“There,” she said, “that should hold the water back, at least long enough for us to get inside.”

“Thanks Honey Lemon,” Hiro said. He was already digging out from his supplies a small portable generator that could power nearby electronics as well as a touchpad. Placing the generator on the wall next to an electronic keypad, bringing it to life, Hiro disconnected the panel from the wall and attached the underlying wires to his touchpad. Thirty seconds later he had hacked the door and it opened with a hiss of decompressing air.

Inside was a spacious room, though it was too dark to see what was actually inside. The team filed in and Hiro resealed the door behind them. “Fred, can you give us a little light?” he asked.

“Can I?” Fred replied excitedly and activated his floodlights.

“Ow! Hey! Watch where you point that thing!” GoGo said, shielding her eyes as she got a full blast of high-intensity light right in her face.

“Oops. Sorry GoGo,” Fred said, then pointed his lights towards the centre of the room.

“Now that’s what I wanted to see!” Hiro exclaimed. All around the room were robots, of all manner of shape and design. Some looked like oversized insects, others looked more like animals, and a few of them had humanoid shapes. In the middle of the room was a large table with dozens of tools and manufacturing machines with half a dozen partially made robots scattered about. “This must be where he built Trina! We’re bound to find something usable in here!”

“Slow down there, Hiro,” Wasabi said, holding out a hand as Hiro tried to run to the table. “Do you not see all the robots around the room? What if this is some kind of trap? We all know how dangerous Obake’s creations are.”

“I’m sure it’s fine, but if it makes you feel better ... Baymax, scan for energy sources.”

“Scanning. The only active energy sources I detect are from ourselves and the portable generator attached to the door,” Baymax said.

“See? Nothing to worry about,” Hiro said, then ducked under Wasabi’s arm and went over to the table. On it was a humanoid robot, or at least the parts for one. There were arms, legs, a torso, and a head but each piece was separated from the others. Picking up the head, Hiro determined that based on its weight that it was fully assembled inside and not just a shell. “This is perfect! If I can take this back to HQ and take it apart I should be able to figure out how Trina’s box works!” He quickly but carefully placed the head into a storage container they had brought for hauling out any salvage.

“If she’s anything like Olivia, I could tell you exactly how her box works!” Fred joked.

“Fred! Not the time!” GoGo scolded. Like Wasabi, she was on high alert for any traps or signs of movement from the surrounding robots. Thankfully, there was nothing and as Hiro continued to explore the contents of the table with no sign of any activity elsewhere, the rest of the team began to relax and eventually join in with the search, deploying a few portable lamps so that Fred’s high-beams didn’t have to be the only source of light.

About fifteen minutes into their search of the room, a loud cracking sound was heard outside of the door, followed by a large thud.

“That would be the ice wall giving out,” Honey Lemon said.

“My sensors indicate that the portable generator has been dislodged from the wall and is floating away,” Baymax said.

“That’s okay. I’ve got a backup,” Hiro said. “We can power the door from this side if we need to.”

Before he could continue his investigation, Hiro got a surprise phone call. His phone was connected to his suit’s electronics so his heads-up display helpfully showed it was from Karmi. He told the others who was calling and stepped away to a corner of the room to have a little privacy. “Hello, love. What can I do for you?” he said, answering the call.

“Aww, how sweet! I didn’t know you felt that way about me!” came not Karmi’s voice, but Megan’s.

Hiro blushed but quickly recovered. “Megan!? What are you doing using Karmi’s phone?”

“Relax, lover boy. She’s right here with me. My phone’s just in the other room, that’s all.”

“Hi Hiro.” This time it was Karmi speaking. “How’s the search going?”

“As of a few minutes ago, great! It honestly wasn’t going well but we just found an unflooded room full of deactivated or unfinished robots, so we’re bound to find something useful here.”

“That’s wonderful! How much longer do you think you’ll be there?”

Hiro checked his suit’s status. “Well, our tanks still have another hour worth of air, so barring any unforeseen circumstances, we’ll probably wrap things up here in a half hour or so.”

“That’s good to hear. Um, Hiro?” There was some hesitance in Karmi’s voice now. “We weren’t calling just to get an update.”

Judging from her voice, Hiro figured it wasn’t anything serious. “What happened?”

“Nothing bad!” she said. “Megan and I were just exploring the lab, which is wonderful by the way, and we may have caused a little accident.”

“What kind of accident?”

“Thanks for trying to share the blame,” Megan said, joining in. “But it really was just my fault. We were checking out all the cool tech that you’ve been building and I wanted to know what one of them did, so I tried to turn it on. Turns out it was an unfinished version of one of Honey Lemon’s chem-boots, and the button I pressed wasn’t the ‘on’ button. Long story short, the fire suppression system was triggered.”

“Seriously?” Hiro said, shaking his head even though he knew the girls wouldn’t see it. “I thought you knew better than to play around with strange tech, Megan.”

“In my defence, those purple flames looked really cool.”

“How is that in any way a defence?”

“We at least cleaned all the foam off of everything,” Megan replied, dodging the question.

“But we kind of got covered in it ourselves,” added Karmi.

“Which is why we’re talking to you from the showers,” Megan finished.

Hiro’s cheeks began to warm and he had to shake his head to try not to imagine the two girls showering together. “You’re in the showers right now?” he asked.

“Obviously not ‘in’ the showers. Karmi’s phone isn’t that waterproof. But we are fresh from them and we’re both still naked,” Megan said.

“Megan! You don’t have to tell him that!” Karmi said, the embarrassment clear in her voice.

“What does it matter? It’s not like this is a video call.”

“Yes, but ... now he’s going to start thinking about it.”

“He’s a guy. He probably started thinking about it as soon as he heard the word ‘shower’. Isn’t that right, Hiro?”

“Neither of you were hurt, were you?” Hiro asked. Megan wasn’t the only one who could dodge a question.

“We’re fine, just a little embarrassed,” Karmi answered. “And nothing was broken either, although there is a noticeable scorch mark on one wall now.”

“Okay. Well I’m glad you’re unhurt, but I really should get back to the team so we can wrap things up here.”

“Roger that,” said Megan. “See you soon. Though you’ll get to see us first.”

“What’s that supposed to mean?” Hiro asked, confused.

In answer, his HUD displayed an icon indicating his phone had just been sent a message. Definitely curious, he went ahead and opened it and nearly choked at what he saw. Megan had taken a selfie of her and Karmi, hair still wet from their shower and wearing nothing but towels. It took him a second to notice it, but Hiro saw that Megan hadn’t quite covered herself properly and her nipples were clearly poking out of the top of her towel.

Blood immediately surged toward Hiro’s groin and he gulped, not knowing what to say. It was a good thing he had moved away from the rest of the team because there was no way they wouldn’t have noticed how he suddenly froze in place.

“Well?” Megan asked. “Did you get my picture?”

Knowing Karmi was right there made things incredibly awkward, but it also incentivised Hiro to come out with the truth right away. “Yes ... but did you know your towel isn’t doing a very good job of covering up certain parts?” he asked.

“It isn’t? Oops.” The way Megan spoke made Hiro wonder if she truly didn’t know before sending the picture. “Too late to unsend it now. I guess you get to enjoy!”

Seeing Megan’s nipples definitely did something to Hiro but he didn’t want to upset his girlfriend or have her think he was glad to have been sent a semi-naked picture of another girl. “Karmi, can you help put a stop to this? She’s getting worse,” he pleaded, mostly in jest.

“Let me see it,” Karmi said, then a few seconds later added, “Oh yeah, that’s a definite nip-slip right there. You can totally see both of them.”

“And you’re okay with me having access to something like that?” Hiro asked.

Karmi thought about it for a moment. “Well, Megan doesn’t seem to mind, so I guess not. It’s just a picture, after all.”

“Yeah, it’s fine,” Megan agreed. “It’s not like you’re seeing me in the flesh. Besides, you’ve seen my girls before.”

“Yeah, and you slapped me in the face because of it, even though it was only for like a fraction of a second, and it was an accident,” Hiro explained. “A picture is something you can keep forever. Are you really okay with me being able to see your ... your...”

“My boobs?”

“Yes, those!”

“I trust you not to do anything inappropriate, like share that pic with someone else. Or jerk off to it. You’ve got Karmi for that, after all.”

“Megan! Don’t be crass!” Karmi said. Even though Hiro couldn’t see her, he could practically hear her blush.

“But if it bothers you that much you can always delete it.” Megan pointed out. “Besides, if you’re that bent out of shape from a little tit action from me then just have Karmi send you something even spicier.” The silence that followed from both Hiro and Karmi made Megan instantly suspicious. “Wait ... you already did, didn’t you?” she deduced.

“Hey!” Karmi suddenly shouted. “You can’t just go through someone else’s photos without their permission!” There was the sound of rustling of some kind as Karmi tried to take her phone back from Megan.

“Too slow!” the other girl replied, laughing.

 
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