Story: SBO Negima

If one were to rank the girls in class by how dangerous they were, Chachamaru was in the top five. That's pretty high praise, but due to her nature it was quite inevitable. Haruna, on the other hand... She would be lower down on the list of most physically dangerous girls, but if you shifted your metrics around a bit then she'd be sitting comfortably in that top five as well.

It was all about attitude. Personality. Curiosity. She wasn't the sort to give up quite that easily, you know? So what if Chisame was a dead end, so what if that girl wasn't going to spill anything at all, and was willing to even humiliate herself if it meant keeping her mysterious secret, secret? It was clear to Haruna that there were others in the know as well.

Others like these two. Chachamaru... and Nodoka.

Oh yes, Nodoka. A girl well noted for her social ken, and could never, ever be flustered into saying something she didn't mean. That was sarcasm, in case you missed it. Some people do need the extra bit of signposting.

"Soooo, how are you two doing?" Haruna said. "I mean, that's pretty big news isn't it? A forbidden tryst, two girls with seemingly nothing in common, finding love with each other, oh! How romantic! Please, do tell me all about it, I'm desperate to hear all the juicy details."

"I fail to see how that is any of your business," Chachamaru said. Yes, yes, she'd be the really tricky one to deal with here. Nodoka was the weak link in the chain, but if the strongest link is covering for that weakest link, then the chain can retain its strength.

"Okay!" Haruna shrugged. "I guess I'll be on my way -"

"No, please stay with us for a little while longer!" Nodoka grabbed her sleeve. Hehehe, yes, of course. Chisame was the same way. She didn't want to be left alone either, for some reason. "Just, don't ask us about our relationship!"

"If you insist," she replied, with a twinkle in her eye and a smirk on her lips. "Then you wouldn't know anything about why Chisame and a few of the other girls are behaving... strangely, would you?"

This was a sort of psychological trap. If they insisted they knew nothing about why any girls in class were acting strangely, Haruna could say something like 'I didn't specify what I meant by strange' and use that to psychologically corner them. The more natural response would be -

"When you say strange, what do you mean?"

Which would, in turn, be less suspicious but it would also let Haruna continue the conversation naturally. Kukuku! See how devious that was? "Well, Chisame was running around in some truly scandalous clothing just now," Haruna began, watching their expressions carefully. Less Chachamaru. Trying to read her emotions was like trying to read the dictionary from front to back. You're as well giving up after a bit, you're not likely to get all that much from the experience. Nodoka, on the other hand, was like reading an epic sweeping poem hidden under glass. There was pretty much no attempt at all to hide the emotions, they were written on her sleeve, scrawled across her face.

She was trembling, breaking eye contact, beads of sweat pouring out from under her bangs. Fidgeting, twirling her fingers like she didn't know what to do with them, and generally broadcasting that she knew exactly what was going on even as Chachamaru was saying "I don't know anything." Of course, she couldn't say anything about whether Nodoka knew anything without seeming super suspicious, but she wasn't looking at Nodoka right now or she'd already know that the game was up.

"Oh, okay, in that case there's not really any reason for me to hang around here! Bye bye!" Haruna waved, and skipped off, leaving the two of them alone... Off around the corner, out of sight, out of mind - 

But only until she could activate her pactio without them seeing! She pulled out a brush, pulled out some paper, and upon it doodled a little tiny bug with a camera and mic for a face. It sprung to life, coming right off the page and buzzing off back to where those two were lurking, where it saw - 

"Huh? Wait, what...?" Nodoka muttered to herself. "Uh, I don't see anyone, do you?"

That's right, little Nodoka, you cute thing! You have no idea, do you? That you're being watched, spied upon, by her brand new mini-golem! The spybug! Bringing a new meaning to the term 'bug', kukuku! People drop their guard when they think they are not being watched, and so -

"There must be someone nearby that we can't see," Chachamaru whispered. That's right, that's right, but how did you know? How interesting, how intriguing, how outright compelling! Spill your guts, spill them so this living rumour mill of an artist could churn it out to the masses! "It would be best if you stayed quiet for the time being."

Is that so...? How fascinating. It was almost as if they could tell they were being watched, but how could that be...?

"Eh, you think someone is spying on us?" Nodoka asked.

"Act naturally, for now," Chachamaru whispered. "It's most likely Haruna. Let's use the fact she's spying on us to our adva-"

Click. Let's try an experiment here, shall we? It reminded her of Schrodinger's Cat. The famous thought experiment, that you've almost certainly heard about at some time or other. Did you know that he'd intended the thought experiment to demonstrate how ridiculous quantum physics really was when you got right down to it? He was trying to be a Diogenes of the modern era, but wound up being taken totally seriously instead.

Anyway. Whatever the intention behind that thought experiment it was a useful metaphor for all sorts of other things. Like this situation, where she apparently could not learn what was happening while she was observing these two, yet had no way to gather data except by observation. Then let's close the box for a few seconds to see what happens. Would they be able to tell when she started watching again? Let's see! Let's find out, let's - 

Nodoka was holding a sign over her head. It read "I become a bimbo when nobody's around. Don't tell anyone."

Pop! Pop, pop, pop! 

The first pop was Haruna's boobs swelling to a size where a button on her shirt popped off. The other pops were her brain cells fizzing out, as the increasingly-volatile bimbo spell wrenched its way into her mind. Despite what others might have thought, it was still possible for her brain to be even more perverted, so as her body exploded into curves, her mind was filled with even more obscene ideas. New plots for her doujins and new schemes to have fun with the all the cuties and hotties at the school. 

There may have only been one pop that came from her breasts, but her melons didn't stop growing until they were triple the size of her head. But by that point, she no longer had a shirt for her tits to ruin. She didn't have a skirt, or shoes, either. The only stitch of clothing that remained on Haruna's body was her glasses. The rest had been wiped away. However, at first glance, one might not have noticed. From a distance it looked as if Haruna simply had on some slightly-rugged clothes. A set of overalls covered up most of her body, from her ankles to her chest, though her massive gazongas stretched the denim out, and the buckles of the overall's straps were right over her fat, baseball-sized nipples. Beneath it, she wore a light pink shirt, with a tie that was snuggled carefully between her melons. From behind, there was even a thong visibly yanked above her waist, nestled in her butt crack, and drawing attention to the thick, doughy spheres she now had for a butt, perfect for long hours of sitting and working.

It was all fake. Haruna's body was actually covered in intricately-designed body paint. There were even small intentional blotches of paint on her overalls, evoking the image of a young woman splattering paint across a massive canvas. A normal person might not have noticed until they were right up against her, where the brush strokes would become visible. Of course, no normal person would be able to see her bimbo form for more than a microsecond before they were a bimbo themselves. But for that brief moment they would have appreciated the artistry. It meant that Haruna's obscene body was exposed at all times. For a perverted hentai doujin artist like her, it was perfect, as she could be fucked or groped without having to disrobe, allowing her to work on her doujins without rest. 

Haruna's hair was similarly coloured, with a rainbow of strands sticking out from her dark green hair. A streak of titanium white here, cadmium yellow there, alizarin crimson on the other side. As if her hair itself was a palette of paint. Her lips were coated in a layer of phthalo green lipstick to match her hair, which now had a variety of paintbrushes and pencils sticking through a hairpin on the side of her head. Without any pockets on her person except the ones she was born with, it allowed bimbo Haruna to keep her implements on hand at all times.

"Like, tee hee, now I get it!" Haruna tittered away, putting her index finger against her cheek while leaning forward cutely and thrusting out her butt. "This is what they were keeping secret! Yay! Now I'm gonna tell <i>everyone!</i>"

Ladies and gentlemen, it's up to you to decide: Worst case scenario, or best case scenario?