Story: Oversynch

"I really don't want anything to do with this<♥> " Hikari said. While putting her hands behind her back and thrusting out her chest. "It's perverted and nasty! <♥>"

“Are you trying to be sarcastic or are you really that oblivious to your actions?” Rei asked, staring at their classmate in bafflement.

"What are you talking about?" Hikari asked, gently rocking two and fro while the gestalt had their hands on her shoulders. "Don't do this to me! <♥> Don't change my body in all manner of nasty disgusting ways! <♥>"

"I'm not really liking this side of you so much all of a sudden..." Asuka griped. "Oh well! For science! Where should we start!"

"Don't make me a futa girl!" Hikari squealed, squatting down with her hands on top of her head. "Don't, please don't! I don't think I could possibly bear it!"

You didn't need to be in the Gestalt to get what was going through all three of their minds right about then.

"Uh... I think that would be a little too extreme," Shinji said. You could actually see Hikari's shoulders slump a little at that. Otherwise her posture didn't change much. "We should probably go for something a bit smaller, like changing her hair colour."

"Hmph, typical boy!" Asuka sniffed. "Even though you're in a gestalt with one beautiful girl and a doll that approximates girl, you still don't get how important a girl's hair is to her."

"Then let's... I don't know, make a little bit taller or something?" Shinji suggested.

"Fine, fine! Something like that shouldn't cause any issues, if we can't undo it," Asuka said.

Hikari coughed and stood up straight, pretending (badly) that this had never happened. "Alright then, fine. I could do with a few extra inches. What do I have to do?"

"Stand there," Asuka said. "Look pretty."

"Tell us if something starts to feel bad," Shinji said. Which, you know, not the most reassuring thing to hear in recorded history. But well, it could be worse considering they were doing an experiment to modify another person’s bodies using their shapeshifting powers that they haven’t even had for more than a day.

"Er, maybe we should get some proper supervision before we - Yipe!"

That was caused by Rei grabbing hold of the back of Hikari's neck. Oh boy. Oh boy! This felt really weird. Hikari wobbled a bit. It felt a little like she was becoming disconnected from her own body. Her consciousness, floating out the top of her head to drift around the room and look down on everyone else. There was Shinji, standing off to the side. Watching with keen interest, but still not quite having the courage to get involved. There was Rei, holding onto the back of her neck. Serene, watching with unblinking red eyes. Then Asuka, her friend, stroking Hikari's cheek as if to let her know that she would be alright. Then there was Hikari herself, standing naked in front of the others.

And finally, there was Hikari's penis.

...

Back up a second. Hold on now.

“Girls, I think you mixed up something.” He said, doing his best not to stare.

"Rei..." Asuka scowled. "You were supposed to be the one in charge here."

"My apologies," Rei said. "I was bombarded with internal images of Hikari with a penis."

“Well, at least it looks good, wonder how big it gets when erect.. and there we go.” Asuka said, and Shinji could feel the <i>interest</i> from her even without trying.

"Wait, wait! That doesn't make sense!" Hikari said. "If Rei was thinking about what I'd look like with a penis, shouldn't that meant that all of you were thinking of me with a penis?"

The three of them at least had the common courtesy to not look Hikari directly in the eye. But they were staring at another part of her anatomy.

“We should test if it functions properly” Rei suggested, somehow managing to sound both sultry and deadpan at once. A bit of an acquired talent, but it helped to be psychically linked to a genius and a closet pervert. "Then we should reverse it."

"Oh, no! That's my limit!" Hikari protested, backing out of the room. And not at all because once they'd tested it out they might <i>take it away</i> "You guys have fun with your body modding, but - Oooh boy right there..."

Asuka had taken the chance with Hikari being distracted by her rambling to push her back. Rei, having seen what her partner in crime was planning instantly moved behind their <s>victim</s> test subject and worked as a cushion when they hit the ground.

Then Asuka raised one of her feet and stepped on their classmate’s dick, putting just enough pressure into it to feel good. Then she started to rub it, up and down, poking the tips with her toes with a precision that would have been impossible a few days ago.

"It's really hot watching you two work together like this," Shinji said.

"That's cute," Asuka said. The redhead was standing there smirking down at her friend with her usual level of cockiness (sorry, not sorry for the pun) "I think it would be hot if you gave her a handjob."

"Eh?! What? B-But I'm a guy!"

“Do these look like they belong on a guy?” Asuka said, pointing at the momentous pair of melons hanging off of Shinji’s chest. Even as she did that, she never paused in her foot-based molestation, made possible because Rei was watching intently and let her guide her foot without even looking.

“Bu-but, I can just get rid of them!”

Alas, Shinji learned at that moment what it felt like for a pair of girls being lusted over by a guy who was watching them perform some manner of lesbian sex scene. He looked to Rei for support, but she was too busy staring at Hikari's by now turgid penis like she was looking at a steak - no wait she was vegetarian... uh... tofu dinner?

"A salad would be fine for your metaphor," Rei said. "Though I would hope you would eventually eat some meat before too long."

Guh! Shinji felt a burst of... something. Pride in himself? No, no, that can't be it. It was something like that. "Yeah, right! I'm not gonna just go along with this because the two of you feel like watching some yaoi!"

"Is it yaoi when one of them is futa… ?" Rei asked.

"No, that's... Ugh, I think we need to invent a new category for that one," Asuka said. "Um... Depending on what they're doing it could be pegging... But if it's just a handjob, I suppose it would be... Hrm..."

"It doesn't matter what it's called! I'm not doing it!" Shinji said, little realising that he'd been stroking off Hikari's dick with big long jerks up and down and up and down with his fingers adjusting instinctively to make sure the pressure was just right at every single inch of the shaft...

"Oohhhhh...." Hikari gurgled. "No wonder boys get addicted to this..."

And that was when Shinji noticed. Asuka snorted a laugh,

“Urgh.. does that make me gay?” He asked, feeling somewhere between depressed and aroused due to the other two members of the Gestalt reflecting their own horniness onto him.

“I believe the correct term is bisexual, pilot Ikari.” Rei said, then turned to kiss Asuka on the lips. "I think we're all bisexual now." She leaned in and kissed Asuka again. "Definitely bisexual."

"Hrm, I'm not sure..." Asuka said. "Let's try another few tests."

"Couldn't agree more," Shinji said, and then a very Asuka like smirk fell upon his face. "Make out with Rei while you help me jerk Hikari off."

Cue Asuka, much to her own surprise, putting her hand over Shinji's and the two of them working together to jerk Hikari off. Asuka, for her part, scowled at Shinji while Hikari's eyes rolled back into her head, and then she toppled over.

"You perverted - Oh, she's fainted."

"Well, it was fun while it lasted," Shinji said.

"I'd say this was a rousing success otherwise," Rei added. "We can alter another's body so long as we have direct skin to skin contact with them."

"That seems kind of too broken," Shinji said. "There has to be some kind of limitation to it, right?"

"Sometimes you do say smart things, but not nearly often enough," Asuka said. "So, you can stop making me jerk my friend off now."

"Why?" Shinji said. "You look really cute when you're perving on your friend."

"St-stop trying to trigger a tsundere reaction, idiot! I'm not a tsundere!"

"Uuuurgh! What hit me?!" Misato moaned from outside. "It feels like that time I visited the beer factory..."

Cue panic. The three of them fumbled around the room, much like you might see in an old cartoon. Except, if you slowed the footage and watched in slow motion, at least one of them had a hand on Hikari's penis at all times. In one sense what they were physically doing was a pretty decent metaphor for what was going on inside of the Gestalt, as they stopped goofing around and playing, and started thinking about how to handle this unexpected yet inevitable development.

"Oh, Misato! Are you awake?" Asuka yelled, while Shinji switched on the shower. "Hast du etwas Zeit für mich, dann singe ich ein Lied für dich-” She started singing, trying to make sure that nobody could hear the fumbling of Shinji and Rei as they tried to keep Hikari upright.

Ignoring for a moment about how Asuka was singing a comedy song about how a mass of red balloons accidentally set off a nuclear holocaust, Shinji and Rei were currently in the process of trying to squeeze out of the bathroom window. A feat made a bit simpler due to their freshly discovered ability to morph the bodies of others. Now, what they'd do about the unconscious (and now cumming) futa-Hikari was anyone's guess.

“Where are Shinji and Rei?” Misato asked, sounding a little pained. Asuka could almost see the curvy woman rubbing her forehead to nurse a growing headache. “How long was I asleep?”

“Hielt man für UFOs aus dem All, darum schickte ein General-” Asuka paused in her singing, then spoke up. “Oh, they left earlier for a walk. Not sure how long you were asleep, maybe an hour?”

She coughed, before continuing even as Shinji repeatedly slapped Rei’s bubble butt in an attempt of getting her out of the window. “-Ne Fliegerstaffel hinterher, Alarm zu geben, wenn's so wär. Dabei waren dort am Horizont nur neunundneunzig Luftballons!”

1. 
   
2. Misato is not an idiot and rushes into the shower.
3. Shinji and Rei come in through the front door and pretend nothing is wrong.
4. Same as 2 but they forgot their clothes.
5. Shinji and Rei immediately run into Kaji, who was waiting for them outside.
6. Something else