The two of you end up working together

You weren't the type who fancied yourself a hero, even if you liked to knock bad apples down a peg, but with both your sense of duty and your pride on the line, you weren't about to let this girl half your weight and nearly half your height do the fighting for you. With fire in your eyes and just a little in your mouth, you motioned for Invisible Girl to get behind you, then started to walk forward.

To your surprise, your pants fell down again. This time, as you bent down to pick them up, suspecting that you might still be suffering the effects of the hero's earlier mischief, you found that the mischief went deeper than you'd expected. You found that one of your hands had been tied to the subway car's handrail with your own belt! She must have pulled it off when you weren't paying attention. As you moved one hand to untie it, you suddenly found one palm **** atop the opposite knuckle, then felt the belt come free. While holding both hands down, she looped the belt back around and hooked both there.

It took all of your effort to avoid saying something very ungentlemanly to the lady hero, as you struggled with both hands bound and your pants around your legs.

"Sorry, but I really have to take care of this myself! I-I'll buy you some ramen later to make up for it, okay?!"

You could tell she was sorry for making you look like an idiot in front of everyone. Nobody was laughing harder than the man you'd intended to fight earlier, whose snake-like fangs were revealed in a huge grin. "Aaw! Now you won't even be able to run while I pulverize you for disrupting my bussssiness!" the man cackled, while cupping one hand to where an ordinary human's chin would be. It instead had the effect of him rubbing the length of his neck. "Not very heroic of her, if you ask me."

"Oooo, quiet already! I'm going to do the same thing to you in just a second!" Invisible Girl ranted, though you couldn't tell where from. The girl had once worn gloves and boots that would give up her position, supposedly, but her ability to manipulate the invisible field around her seemed to have grown much stronger since she became a professional hero. It was likely that whatever her current hero suit was, she could completely hide it using her abilities. Her crafty handling of you made you feel a little better about her chances against the villainous Rattle.

Invisible Girl going silent was a good indicator that she was about to make her real move. Rattle, looking as confident as ever, turned his head this way and that, as though following her movements. You could tell something was wrong... in a situation like this, you'd be sweating and swatting around yourself, trying to anticipate some kind of attack.

Finally, Rattle broke the stalemate, swinging out his tail. You could tell Invisible Girl would have jumped it; all UA students had at least that much combat training. Now she'd probably pull out some tricky method of restraining him, like an invisible zip-tie or handcuffs or something--

Whatever she had planned, she didn't get a chance to use it. As though she was simply Girl, rather than Invisible Girl, the lady hero found herself in the clutches of the snake-headed mobster, who flicked his tongue in a sinister smile as he reached out and choked what was clearly the slender outline of her neck. "Invisible? Not to my eyes!" the man boasted, while tightening his grip around the coughing hero's windpipe. "Your power is no good at all against an enemy with heat-sensitive vision. And my... that is a hot body, if I've ever seen one! If you apologize, perhaps I'll take you to see my crew after all! You can apologize to all of us in person!"

You weren't going to let this creep get away with it! Using the little bit of stored friction you'd built up-- as well as the mild arousal of standing in public with your pants off and hearing Rattle talk about Invisible Girl's ordinarily invisible body-- you released a spit-fire shot of flame towards the villain's questionably expensive, buckled loafers!

"What the hell?!" the gangster cried, jumping back and forth as fires crept up the legs of his pants. "I'll kill you for that, you clown!"

"Nice!" Invisible Girl complimented you; she ought to be scolding you, as a civilian, for getting involved in hero affairs, but in this case, she was probably happy for the assist. "Now, I'm gonna ask you to trust me. You've got to burn all of the bus seats around us!"

That sounded like a pretty crazy plan, alright. Trust wasn't coming easy. "It ain't that simple," you warned her, while urgently trying to pull your hands free from where she'd tied them earlier. "I can't do it yet!"

"What?! But why not?"

"Because I..." you grumbled, looking around the now mostly empty train car. The only people still left here were you, her, and Rattle, who'd just about finished patting out the flames on his slacks. You'd have to suck up your pride and tell her. "My quirk, Kindle, gets stronger with skin-to-skin friction and... you know... sexual arousal. Those two things power it up. Now you know why I'm not a damn hero."

"Woah! There are quirks like that, huh?" she gulped, sounding like her mind had gone straight into the gutter and she was having a hard time pulling it back out. "Okay! Just this once, since it's my fault you're in this mess, I'll help you out! We'll help each other out, that is!"

"W-What do you mean, 'help me out?'" you asked, finding your own mind circling the same drain hers had just fallen into. Specifically, your brain had gone right to your dick. She must realize that, given the criteria you'd just handed over, dropping your boxers and rubbing up against your shaft would be the fastest way to power up your quirk. You actually found the thought of that plenty arousing on its own. You repositioned your legs to try to hide the tent that was slowly growing in your boxers.

"Like this!" You saw a glove drop to the ground, becoming visible as it left her cloaking field, then felt a hand grab hold of your calves. It wasn't really erotic, but it was skin-to-skin friction... she'd begun to give you something like an Indian sunburn on the exposed part of your leg!

"You don't actually have to make it burn for it to work, dammit!" you protested, feeling her wringing out your calve with both hands. One of them was still gloved; that wasn't even going to help!

"Whoops! Sorry. But that's a lot of friction, right? Can you do the fire thingy again?" she questioned with a sense of urgency, the snake guy was approaching again.

"Duck and I'll show you." This wasn't a boast on your part; it was a matter of giving her a command so that she didn't get her hair burned off. Unlike Rattle, you didn't have a way of following her movements. As much as you'd have loved to blow fire all over the approaching criminal and watch him burn, you instead aimed around the car like she'd requested, lighting each of the car-seats ablaze. Her short work on your legs had done a lot to power up the strength of Kindle... even an annoying move like that had aroused you more than you cared to admit, given how infrequently you were touched by girls. "Alright, whatever you're gonna do, now's the time to do it!"

"Aye aye!" With that odd affirmation, she left off squeezing your leg, then basically vanished.

For once, you and Rattle seemed to have the same reaction; dumbfounded, frustrated scowls as you tried to figure out where she was going. Now you understood! The point of having you use Kindle to set everything on fire was to make it so her heat signature would be hidden from the guy's view! With this, she'd essentially be invisible again! "Bitch!" the mobster grumbled, swiping his tail against the ground. He probably thought that she'd have to approach by the floor, since all the seats were on fire, but you noticed a few of the seat cushions depressing. She was probably counting on her fire retardant hero gear as she approached up one side.

Soon enough, the snake was caught; his eyes bulged and his throat tightened as Invisible Girl got **** for the earlier chokehold. Rather than keeping him held that way, she hit him with something like a Frankensteiner. You were treated to the bizarre sight of the man leaving his feet, swinging his head whip-like through the air, then clunking it against one of the hand-rails. Once he was addled, his hands were tied behind his back with a rope that slowly became visible, then he was dragged to the not-on-fire portion of the subway car.

"Nice!" you complimented the hero, grinning as you anticipated her coming back to untie you.

When that didn't happen, you began to panic. You were resistant to fire, but not that resistant! If the fire kept creeping closer, eventually, you'd be barbequed like those seat cushions! Were you **** enough to try to burn the belt off your hands?

Before you had to consider the ramifications of that, you spotted a fire extinguisher floating through the air. "Thank God," you sighed in relief, as Invisible Girl began to spray down the car. It looked like, against all odds, the situation had been contained without that much damage... well, except to the train car. Public property damage just seemed to be part of the business for heroes, some times, though you imagined most people wouldn't have expected to attribute any to the work of Invisible Girl, of all heroes. Your role in subduing this guy wasn't likely to ever be known... That was probably for the better, considering you were bent over and sweat-soaked with your pants around your ankles.

The police moved in to get Rattle once the subway train finally reached its next stop. They weren't slouches; the fire had triggered them to set up an intercept. Even if Rattle hadn't been caught by Invisible Girl, he'd probably have been surrounded by police. Unfortunately, you were also caught in their crosshairs, as the one who set the fire.

"Let him off the hook, okay? That was my instruction! It was self-defense so the snake guy didn't get his hands on us," Invisible Girl pleaded with the officers. That seemed to work! You wondered if it would have, if she was less of a cute and empathetic hero...

... Earlier, "cute and empathetic" would have been a far cry from the words you'd have used to describe her. The fight together seemed to have changed your opinion of her. Despite all the tricks she'd played against you and how you'd badmouthed her, overcoming a common enemy together seemed to have put the two of you in a good mood and turned you both into comrades. "Thanks for bailing me out, Invisible Girl" you grumbled, checking the buckle on your belt self-consciously.

"Hey, you're the one who saved my bacon! From now on, you can call me Hagakure, or Toru if you like!" she giggled; you saw her gloves move up to the point where they were crossed behind where her head ought to be. It seemed she was capable of exposing that much of herself, for the benefit of those communicating with her, but the rest of her body remained hidden. You wanted more specifics about that. In fact, you wanted to talk to her some more in general. This was the kind of experience that made you want to gab about it, like if you'd won a big football game or even just picked a winning fantasy football bracket. "My adrenaline's still pumping from that fight with Rattle! My heart's thumping!"

"And I'm hungry as shit," you admitted, crossing your arms at your chest. "You said you owed me some ramen, right?"

"Oh, I did say that! How about we grab some dinner? My treat!" the disembodied voice encouraged you, while patting one hand upon the broad surface of your shoulders.

You weren't sure what to expect, but you nodded along and followed the chipper, invisible hero. "Say, you're walking like you're going somewhere, but do you know any ramen places around here?"

The disembodied feet stumbled and the gloves waved comically in the air. "Eh heh heh... No, this is a little far from my house."

Although you made a big show of sighing and shrugging your shoulders, you were secretly happy you'd have a chance to show her your favorite hole-in-the-wall ramen restaraunt.