Impromptu quirk training... in the bathroom

"Heeey, Ren!"

That was Invisible Girl's voice. At first, you jumped, picturing her sharing the space of the cramped shower along with you, a situation which would most certainly result in you blasting her with an uncontrolled plume of fire breath. Once you blinked yourself back into reality, you realized that her voice was coming from outside the bathroom door, although she may have opened it just a crack. Annoyed, you asked her what she wanted.

Heedless of your aggravation, she continued in a chipper tone. "I heard you stomp across your floor and then shoot fire out the window earlier. It was really loud! Why'd you do that, anyway?"

"... Sexual frustration," you answered with a grumble in your voice. There hadn't been friction at the time, but the stimulation was enough. It wasn't nearly as bad as when you'd rubbed her through the towel the night before, but it was still enough to get the fire going.

"Oh, wow! You can do all of that with just a girl talking about your boner?!" she gasped, sounding both shocked and awed.

You sighed deeply. "It's not that I can do all of that, it's that I have to do all of that. It's a fucking curse. My choices are either hock a fireball out the window or burn the whole damn apartment complex down," you explained, while running your fingers through your soapy hair to slick it back, away from your forehead.

"A lot of students arrive at UA like that, actually! Unable to control their powers, I mean. I think that's the part you're missing... Control, I mean! If you just had that, you'd probably be as good as a pro hero without all the years of training!" Invisible Girl piped up, sounding excited about the idea.

"Yeah, well, ship's sailed," you reminded her, clicking your teeth as you shook your hair dry. Without your usual gel, it fell pretty long. "I ain't getting a fucking education at this point, let alone a UA one."

"I could teach you!" she continued, seeming either louder, closer, or both. "This is definitely the kind of thing you can master if you put the effort in! We could turn you into a super awesome fire hero like Todoroki or Endeavor!" You knew that was impossible too. Becoming a hero was a matter of a lot more than just ability... It was a matter of going through a specific government program.

Her ordinarily infectious enthusiasm was just getting grating at this point. "Do you have some teacher on speed dial that wants to teach a no-name thug how to manage his fire quirk?" you asked her sarcastically.

"Me! I can teach you!"

You almost laughed. What does an invisible quirker know about managing the strength of flamethrower breath?

"So it's friction and arousal, right? Those are the two things that make you shoot fire?" There was a pause while she waited for you to confirm; begrudgingly, you did so. "Great! So, for the sake of the mission... what do you think about me touching you a little?"

Your dick throbbed at the response. You thought she'd entered the bathroom by this point and if she had, then she could probably tell what you thought of that suggestion just by looking at your silhouette. Did she understand what she was asking right now? This didn't seem like a situation where she was too pure or too naive. In fact, it seemed like just the opposite. Despite understanding the ridiculousness of the situation, you found that the word "no" wouldn't actually leave your mouth.

"I won't do anything weird, I promise! Hero's honor! But if you're in the shower, if it gets too hot for you, you can just use the shower to cool it down,r ight? This is the perfect way for us to help you get control over your abilities! Trust me, I've been through all kinds of crazy tests and exams as a student! I know that this 'testing your limitations' thing really works!" Invisible Girl persuaded you further. You could tell for sure now that she was just on the other side of the curtain. "Let's just fool around a little bit!"

You thought to yourself that her phrasing just made it sound worse. Again, however, you couldn't say no. Before you had another chance, you felt the gentle touch of a phantom hand upon your back, as the shower curtain parted slightly on one side to allow Invisible Girl's transparent arm inside. There was nothing professional about this... You could feel her fingertips running slowly down from your shoulder blades to your lower back, down towards your buttocks. Was she teasing you again? Whatever the case, it was almost instantly effective, as the heat inside your body rose, battling against the coolness of the shower.

"How's that? Is that turning you on yet? Turning on your Kindle, I mean!"

At this point, you were wondering if her phrasing was teasing or if she was just being direct. Regardless, with heat built in your throat, you told her that it was barely anything. In a situation like this, you'd be able to control your flames yourself. You didn't need anyone-- not UA teachers, nor UA's graduates-- telling you how best to manage a quirk you'd lived with for your whole life. You were framing it as a point of pride... but maybe you just wanted to egg her on a little further.

You felt her hand leave you and, for a while, all you could hear was the patter of the shower droplets and the faint rustle of movement. Finally, you heard the shower curtains part. This time, she did it: she stepped into the shower with you.

"Holy shit," you growled out loud, instinctively moving forward as much as you could in the tub without hitting the head of your erect cock against the wet tiles.

"This is training, remember?" Invisible Girl giggled behind you. "Come on, big guy! If you're really that tough, though, we've got to up the ante!" The position of her voice reminded you of her small stature compared to yours. Still... with that pause and her willingness to get into the tub with you, there was no doubt she'd reverted to her old uniform, i.e. complete nudity. The thought made you feel like you could burn your whole room down in a flash, wet or not. The feeling grew as her hands both pressed against your back, palms and fingertips, then rubbed their way from your shoulders down to your forearms, to the backs of your hands and between your fingers.

"You're horny as shit," you pointed out to her, not mentioning your own twitching dick.

"He he..." her voice came in a teasing chuckle that more or less confirmed your accusation. "You got me there. It's okay, isn't it? You're not going to report me for losing focus on my mission, right? If you're my partner, then this is technically training. Think of it as a bonding exercise!"

A growl rose to your throat, then you confessed: "last night, I kind of... accidentally... fapped one out. Involving you. You were involved in the fap, I mean."

The laugh sounded again, as her hands circled around to rub your abdomen. Whatever ticklish feeling you might have, it was overpowered by the sensation of her hands being just a short distance away from the head of your cock. "I found the towel, Ren. The cum towel," Invisible Girl clarified. "I was trying to find a fresh towel to use and came upon that one. I didn't 'come upon it' the same way you did, but... you know," she giggled. "Anyway, I kind of put two and two together that you were using me as fap material! It was kind of gross, but also... I don't know... I pictured you with your hair wet and without the stinky clothes on and I thought it might be worth checking you out in the shower."

You scoffed. "So all that shit about training was just you making shit up?"

"N-No! I think this is actually a good training method! See? You haven't shot fire yet, despite me doing all of this, right? Isn't that kind of amazing?" she pointed out, sounding like she was pouting. "If this happened normally, you'd have no control, right? But look! You're holding it in!"

"I'm holding it in because-" you started, then clicked your teeth.

Again, you heard her giggling behind you. "Oooh... You're holding it in because you don't want me to stop yet, right?" With a teasing voice and worse teasing hands, she allowed one hand to cup the firm surface of your buttocks while snaking the other down to your thigh, just a short trek away from your balls. "How about this?"

"You're going to regret this when I light this whole place on fire," you warned her, while clenching your teeth and pressing your hands to the wall. She was right. You felt like you had to hold it in, just so she'd keep going.

"W-Well... what if I...!" she whispered in a giddy voice, now allowing herself to cup one hand beneath your sack. At the same time, she moved her other hand from your butt to your painfully erect shaft and began to gently stroke it, from the base up towards the head. "Oh... sheesh... it's huge...! I can feel it twitching too! You've got a really big dick...!"

Hearing her addled, inarticulate awe of your penis was setting you off. Coupled with the sensation of a soft, invisible hand cradling your dick, it was entirely too much. "Fuck! You gotta let me go, I'm about to shoot!"

You heard her gulp behind you. "You can shoot your stuff, Ren! I don't mind!" She sounded pretty eager.

Also, misguided. "I'm not talking about that stuff, idiot! I mean fire!" It was hard to speak around the flames building up in your throat. The water was no longer effective as a deterrent.

"Bwah!" You heard her fall backwards and hit her butt on the tub. The erotic scene suddenly turned into a comedic one, as you nearly tore down your shower curtains in your attempt to spin around and exit your shower. You found yourself stepping all over the shower's other occupant, and, predictably, slipping on her. You weren't quite sure how you landed, but you were immediately aware of the feeling of your dick throbbing with release and sliding across her body. Against your better reason, you were shooting your jizz all over her. The feeling of release was phenomenal... you wished that it had been by her hands, preferably without the slapstick scene, but the softness pressing against your groin was extremely encouraging.

However, there wasn't much time to think about that. You hit your head on the wall tiles and discovered another effective way to keep your fire from coming down: falling into a state of near **** stupor.

"Aaaah! I'm sorry to all of the UA teachers!" you heard Invisible Girl apologizing to all of the professors that she'd just dishonored by comparing this impromptu handjob to their training sessions. You weren't sure if the two of you had learned anything from all of this... Except for where things stood between the two of you. "Ren, are you okay?! Don't diiie!"

You sure as hell weren't going to die from something as stupid as this, after all the battles you'd been through.

But you did think you were going to end up napping for the rest of the morning.