"Mom! Guess what Ferb did!"

Phineas bursts into the kitchen energetically, still buzzing with adrenaline from the day's adventure. Ferb follows a step or two behind. Linda turns her attention from the freshly baked pie in her hands to her sons, although Phineas is too beside himself with excitement to consider whether or not she's paying attention. "He made a secret tunnel, and a spy headquarters, and a villain's lair, and a hover jet shaped like Perry- tell her, Ferb!"

Ferb doesn't match Phineas' enthusiasm. In fact, at the moment, he's sick to death of it. He prepares to launch into the explanation he's been trying all day to give. "Actually, I-"

"Wait a second," Linda interrupts, eyeing the boys with suspicion. "Why are you two soaking wet?"

The interruption is just too much for Ferb. He doesn't even process the question, just lets out a harsh shout of frustration. Phineas recoils - Ferb almost never shouts. "I give UP!" Ferb yells, his voice shaking on the last syllable, and before either of his surprised family members can respond, he turns around and storms off, his destination betrayed by the distinct clunking rhythm of stairs being stomped on too hard and the sound of a door slamming upstairs.

For a moment, the kitchen is silent. Linda recovers before Phineas does, her eyes narrowing in disapproval. "Young man, that is not how we talk to each other in this house!" she calls, setting the pie tin and her oven mitts down on the kitchen counter and following Ferb's path to his room. Before she can make it to the doorway, though, her progress is halted.

"Mom, wait!" Phineas pleads. He's finally caught onto what's been going on all day, and although he's still only half processed it, he knows he doesn't want Ferb to be in trouble for it. He frantically tugs on Linda's arm to draw her attention. Once he's sure that she's stopped, he withdraws his hand (he's still wet, after all, he doesn't want to make her uncomfortable), but sidesteps around her to put his tiny body firmly between her and the doorway to the living room. "Mom, please don't be mad at Ferb, it- it's not his fault! I'm sure he didn't mean anything by it, he's just..." Phineas' voice trails off briefly, but he forces it back into action, complete with the most serious expression he can manage. "If you're gonna be mad at either of us, it should be me, okay?"

At first, Linda returns Phineas' gaze with suspicion, then her face softens with realisation. She crouches down to her son's eye level, placing a hand on his shoulder. "Phineas, did something else happen today?" she asks, the anger gone from her voice.

Phineas hesitates, dropping eye contact again. He's almost certain about the cause of Ferb's outburst, and he can't help but mentally beat himself up for it to a degree. "Well, Ferb's been trying to tell me something all day, but he kept getting interrupted by our spy mission, and I guess it must have been really frustrating because he hates being interrupted but I didn't realise and-" he pauses to breathe, and shudders as he inhales as if on the verge of tears - "and I should have asked at some point but I just kept getting distracted and I didn't even realise how upset it was making him but-"

"Phineas," Linda says gently, and he gladly accepts the invitation to cut his rambling short. His breathing is shaky, but he doesn't cry just yet, even though his emotional state has nosedived in barely a minute. After giving him a moment to snap back into focus, Linda continues. "Phineas, honey, it sounds like this has just been a misunderstanding. On my end, too," she adds, regretting having snapped at Ferb earlier. Phineas nods with a nondescript mumble of agreement. Although he still obviously isn't looking, Linda gives him a reassuring smile anyway, accompanied by a gentle squeeze of his shoulder. "Thank you for telling the truth, sweetheart," she praises him.

"Mmh," Phineas mumbles, tugging at his shirt collar. He tends to fiddle with his shirt when he's nervous or overexcited. It doesn't hold a candle to bouncing his leg or flapping his hands, as far as stimming goes, but it's a lot easier to do while someone is touching you. "I just should've realised what was up earlier, then he probably wouldn't have freaked out..."

He finally glances up again, and the look his mom is giving him tells him that he should drop the argument, so he stops. Linda ruffles his hair affectionately, leaning forward to reach all the way behind Phineas' oddly-shaped head, and flinches at the unpleasant reminder of how waterlogged he still is. She stands up, flicking her hand dry. "I'm sure he knows you didn't mean to hurt his feelings," she reassures Phineas. "Why don't you dry yourself off and then go talk to him? Which reminds me," Linda motions towards the puddles tracked all over the kitchen floor, "why are you two so wet?"

"Oh, we fell in Isabella's pool," Phineas answers matter-of-factly. He isn't quite back to his usual blindingly sunny disposition, but the panicky tremble in his voice has at least disappeared.

Linda smiles, resisting the urge to roll her eyes. "Well, that I believe," she says. She'd tactfully decided not to comment on whatever that secret spy headquarters spiel was that Phineas had been getting worked up over, but she suspects his latest imaginary game took the boys to Isabella's backyard and ended up having some real-life consequences. "Oh, hi, Perry," she adds, as the platypus in question waddles into the kitchen.

Perry responds with his familiar chatter. Phineas leans down to pet Perry on the head. "At least you've had a stress-free day, huh," he says, then leaves for the bathroom. Perry stares at him blankly.

---

Ferb is having a meltdown.

He knows what this is, of course. He reads every textbook and blog post on the subject he can find, just in case it helps him make some more sense of himself. If he misses one, Phineas will no doubt have found and memorised it himself for the same reason, and will gladly rattle off anything new. Knowing why there's a raging storm beating at the inside of his head, however, is entirely different from quelling it. By the time he reaches his bedroom, he's trembling so violently that he can barely stand. He stumbles to his bed, pushing his hands down into the mattress to keep himself on his feet.

It's like feeling every feeling from every second of the day all in the same moment, and it hurts. So much is happening in his head that he can't even isolate a single thought, let alone process what it means. Is he angry? That'd make sense, sure, but his mental state isn't exactly conducive to deductive reasoning at the moment. Is he sad? Scared? Something else entirely?? He can't tell what emotion or mixture thereof it is, only that it's hurting his head, and he wants to get it out but he doesn't know how. He's struggling to breathe now, his arms shaking with the effort of keeping his body supported, and as he draws in a desperate shuddering breath Ferb feels something wet in his eye and then on his face, and he remembers that his entire body is wet and he hates it. It's cold, and his hair is sticking to his face and uncomfortably close to his eyes, and his clothes cling to his body oppressively and he wants to tear them off and stop feeling everything. Instead of doing that, he forces himself to breathe in again and looks around the room frantically, hoping to find something other than absolutely everything to concentrate on.

His eyes land on Phineas' bed, and although his vision is blurring as the panicky tears pour down his face, he recognises the shape instantly. Is he mad at Phineas? Should he be? He should be, right? If Phineas had just stopped to listen to him for once, he wouldn't be here with the world ending inside his brain. Another violent wave of emotion sends a shock through his whole body, and Ferb is still in no state to identify it, but he gets the message. He doesn't want to be angry. Not at Phineas. In fact, he doesn't want to feel anything he's feeling at the moment. Not the turbulent assault of everything inside his head, not the hammering rhythm of his heart trying to beat its way out of his chest, not every tiny thing that touches his skin or the light from outside that still feels blinding through the curtains or the muffled sounds of conversation downstairs that he doesn't have room in his brain to translate into anything but more noise.

Sensory overload is another term Ferb knows, and it's another one that doesn't really help to know in the moment. The feeling of anxiety that's been growing in his chest since that morning finally becomes too much for his body to handle, and he collapses on his bed, weakly gripping the blanket for support. Burying his face in his covers blocks out most of the sunlight, at least, but it doesn't significantly improve his mood. He shivers, partly from cold thanks to still being uncomfortably wet, partly from the sobs making his whole body convulse. (When did those start? He doesn't remember.) He uses the last of his physical strength to pull himself fully onto his bed and curl into himself, trying desperately to calm himself down.

...

It's not working. Why isn't it working?? It's as if every effort to steady his breathing just makes him cry harder, every attempt at a calming thought being shattered into a thousand anxious ones by the merciless torrent of everything whirling around in his mind. Ferb is suddenly hyper-aware of how empty the room around him is, and it makes him feel helpless. It's the first feeling he's managed to connect a name to with absolute certainty this whole time, and it's terrifying.

If he was making any noise before in his attempts to control his breathing, he's stopped now. No sound escapes him as he lies in place, too preoccupied with the overwhelming barrage of thoughts in his brain to move. More than anything, Ferb wants his brain to just shut off. Everything in his mind blends into a horrible white noise that won't stop, threatening to drown him in static.

Through the raging mental cyclone, he just barely hears the knock at the door.

Phineas waits a moment before entering his room. He wants to make sure Ferb has time to process that he's here. A few seconds pass, then he opens the door slowly so that it doesn't make any sound. A stab of guilt hits him when he sees Ferb curled up on his bed, visibly distressed. He's facing the opposite wall, but the way he shudders as he breathes makes it obvious that he's crying. Phineas feels his heart sink. He'd really hoped it wouldn't be this bad.

"Hey," he says softly. Ferb grips himself tighter. Just a minute ago, Phineas would have been the last person he wanted to see, but now his desperation for comfort outweighs any lingering hints of animosity. He doesn't object to his brother's presence, so Phineas gently closes the door and walks over to his side of the room. He sits on the bed, watching Ferb to see if he reacts negatively to the shift in weight distribution, and tenses up slightly at how damp the blanket is. Of course, Ferb wouldn't have stopped to dry off on his way up here. A closer look confirms that while a lot of the water on his body has run off and soaked into his bed, Ferb is still almost as wet as he was when he arrived home. Phineas frowns - that can't be comfortable, and it's probably making him feel even worse. "Are you okay?" he asks.

Ferb curls into himself even more instead of asking. The question is so frustratingly rhetorical that he almost reconsiders the possibility of being angry, but the idea still scares him, so the feeling passes. Fortunately, Phineas understands the unspoken 'obviously not' with no further input, and continues to talk. "I'm really sorry about today," he begins. "I know you don't like being interrupted, and I should've realised that it was making you feel bad but I just wasn't paying enough attention and- and I'm sorry, because it's kinda my fault you got so upset," he apologises, not realising that he's holding back tears until he stops to breathe. He wills himself not to cry. He's here to try and make Ferb feel better, not guilt him into forgiveness.

It takes a second or two for Ferb to process what Phineas is saying. It's a struggle to drag the words through the confusing whirlwind of everything still rampaging through his head. Eventually, after a great deal of mental effort, he shakes his head in response. Perhaps he was angry before, he still can't tell, but he definitely isn't now. He can't manage anything beyond the simple gesture, but it's not the first time he's been utterly uncommunicative, so Phineas understands the meaning as well as he needs to: it's not your fault.

"Th-thanks," he stutters, although Ferb's acceptance does little to settle the crushing feeling of responsibility. "Next time you can speak I'll let you tell me whatever it is you needed to, okay? I promise." He smiles a little. "No more secret agent business to interrupt you."

The last sentence sure prompts a reaction from Ferb - he rolls over so that his face is entirely buried in the blanket and makes a frustrated noise without opening his mouth, his body shaking with some mixture of anger and physical strain. Phineas inhales sharply and recoils, no more prepared for an audible outburst from Ferb than the first time. "Hey, what's wrong?" he asks, already speed-testing possible answers in his head. "Did you not have fun today? Of- of course you didn't, that's why you're upset, but I thought you did a great job on the spy mission! It was really cool." He's trying to be reassuring, but Ferb just shakes harder, seemingly becoming more aggravated rather than less.

Phineas tilts his head in confusion. "Ferb? Ferb, it's okay, I-I'm sorry. Did... did it not go the way you planned?" he guesses, searching increasingly frantically for any change in Ferb's body language. "Hmm... oh, were you not finished building it yet?" He thinks back to Ferb's numerous attempts at speaking to him throughout the day, hoping that he'll find some clue that makes everything fall into place - and something clicks in his brain. He deflates a little at how painfully obvious the realisation seems in retrospect, with a soft "Oh." Sighing at his own ignorance, he directs his voice to Ferb again as he says, "You didn't actually build all that, did you?"

Ferb sits up slowly and turns to Phineas with his signature deadpan glare, the silent, biting sarcasm undermined significantly by the tears still falling from his eyes. Phineas hums concernedly. "Is that what you were trying to tell me?" he asks. Ferb gets partway through rolling his eyes before giving up and returning to the fetal position.

Phineas sighs sadly. He hates seeing his brother cry. There's nothing he wants to do more than pull him into the tightest hug he can manage, but he knows Ferb won't appreciate being touched in this state, so he opts to fiddle with his shirt again to keep his hands busy. "Who do you think did build that stuff?" he asks. Ferb doesn't care. On any other day, a secret spy lair being hidden under his house would be cause for immeasurable excitement, but after the day's events he's thoroughly sick of thinking about the subject. Phineas picks up on Ferb's antipathy towards the question and, sensing that it might be a sore topic for some time, decides not to bring it up again for a while. He'll satisfy his curiosity sometime when it doesn't come at the expense of Ferb's comfort.

An uncomfortable silence falls over the boys. It's broken when Ferb suddenly sniffles loud enough to make Phineas jump, sits up again, and halfheartedly tries to wipe the tears from his face. "Oh geez, hold on," Phineas says, leaning over to rummage through his short pockets. He eventually pulls out a wad of tissues, somehow unaffected by the earlier impromptu dive into Isabella's pool. He offers them with a gentle "here you go" to Ferb, who takes a few silently and scrubs at his eyes.

While he still doesn't feel good by any stretch of the definition, Ferb at least doesn't feel completely awful anymore. What was once a violent hurricane in his mind has receded enough that he can focus on the world around him without breaking down, at least for the time being, and he's left feeling just drained. He balls up his handful of tissues and tosses them at the bin under his desk. The ball makes it to Phineas' leg before unceremoniously bouncing to a stop. Phineas picks it up and throws it the rest of the way to the trash, standing up to do so.

Rather than sit down again, he kneels down and pulls out one of the drawers conveniently built into the bed. Ferb watches inquisitively, still too out of it to immediately catch onto what's happening. Phineas rummages a little before finally pulling out a pair of pyjamas, suggesting, "You should dry off and change your clothes." He pauses to think. "Can you make it downstairs to the bathroom by yourself?" he asks. At any other time, it would be a silly question, but Ferb is always exhausted after a meltdown. The visible effort it's taking him just to stay upright isn't lost on Phineas. Ferb ponders the question, then gives a tentative nod. He's definitely shaky, but he really wants to change into something dry.

"Great!" Phineas smiles encouragingly. "Should I bring the usual stuff to the living room? Your bed's probably not gonna feel comfortable until it dries out." Ferb glances down at the unmistakable damp silhouette of where he had been lying earlier and nods again, more confidently. He slowly gets to his feet, first pushing against his bed for support, then grasping the hand Phineas offers him. He lets go once he's certain he's regained his balance, and only then does Phineas hand him his pyjamas. "I'll come meet you downstairs, okay?" Phineas says. Then, pulling at the bottom of his shirt, which is still a bit soggy despite his best efforts to towel it off, he adds, "I should probably change into something dry as well."

---

Ferb rubs his eyes as he comes out of the bathroom, his drenched clothes swapped out for his much more comfortable pyjamas. He's stopped crying, it seems, but he's still feeling sensitive enough that the light from outside bothers him. He's relieved to discover that it's much darker in the living room - Phineas must have been here already. The curtains are drawn so that the lamp on the end table is the only light source in the room, softly illuminating its surroundings with a pleasant warm glow. He doesn't have the energy to analyse the entire room, even in these far more bearable conditions, but his attention is drawn to his favourite weighted blanket folded neatly on the couch. He sits down and drags the blanket over him, struggling a bit with the weight, but relaxing once he feels its reassuring pressure on his legs.

It's as he's settling into his position on the couch that Phineas enters with an "Oh, there you are, Ferb!". Perry is firmly but comfortably wedged under one of his arms, like a fuzzy teal football or loaf of bread, and seems altogether unbothered by his position. Ferb gasps quietly at the sight of Perry, his eyes brightening momentarily, and reaches out for him with various soft noises of urgency. Phineas wastes no time in setting Perry down next to Ferb, and the platypus reacts with a gentle, almost soothing chatter. Ferb instinctively mimicks the sound under his breath, and Perry responds with a nearly identical noise. Ferb echoes it again, slightly louder this time, and his face lights up with a weak smile, the first one he's managed all day.

Taking this as a sign of progress, Phineas sighs with relief as he sits on the sofa. He makes sure to maintain a respectful distance from Ferb, who's running a hand through Perry's fur as they echo the same low growling noise back at each other. (It pains Phineas not to join in, but he senses the two have gotten themselves into a groove that would be rude to interrupt.) Ferb's smile fades almost as soon as it appears, but he seems much more relaxed after the change in clothes and scenery. His hair is sticking up in every direction from being towelled dry, and Phineas stifles a laugh at how silly it looks. The back-and-forth chattering eventually dies down, and it's only then that Phineas continues. "Mom's gonna make you some tea, and she says if you aren't feeling better by dinner you can eat in here if you want," he says. Ferb turns to him and raises a thumbs-up briefly before returning his hand and focus to Perry.

Phineas quietly watches his brother for a moment before speaking again. "Do you want me to stay?" he asks. Exactly how sociable Ferb is while he's coming out of a meltdown varies. He almost invariably needs some time on his own to mentally reset, but sometimes it helps if someone he trusts is there to reassure him for a while first. In Phineas' experience, asking is always the best way to tell.

Ferb hesitates for a second, then surprises both of them with his answer, which is to turn and collapse into Phineas' lap with one arm hooked over his legs in a sort of pseudo-hug. Phineas tenses up, not sure how to react. He cautiously puts an arm around Ferb, in a comforting gesture that doesn't fully subject him to the overwhelming sensory experience of a true hug. Ferb doesn't fight it, just repositions himself so that he's lying down with Phineas as a makeshift pillow and sinks further into the gentle embrace. Phineas laughs softly. "Okay, I guess you do."

This is nice, Ferb thinks. Definitely an improvement over violently sobbing alone in his room. Perry must be feeling relaxed too, because he climbs onto Ferb's stomach, circles a few times, lets out one more chatter, then flops down and goes to sleep, purring gently. Phineas giggles at the platypus' behaviour, and Ferb's shoulders shake in silent laughter - his blanket absorbs enough of the sensation that it just tickles. Watching Perry doze off reminds him that he's still exhausted, despite the positive change in environment, and his attempt to stifle a yawn fails. He's still on high alert, and he knows he won't be sleeping for longer than a few minutes until the emotional clutter completely drains from his mind. With that said, both the blanket and Perry weighing down on him make for a pretty cosy combination, and he finds himself fighting to keep his eyes open. Maybe just a moment of rest will be good for him.

Before he knows it, his eyes are closed, and he's powerless to prevent himself from drifting off. Phineas accepts his new career as a pillow without comment, simply adjusting his right hand so that both his arms are positioned protectively around his brother. Being trapped in place for the time being doesn't worry him. Ferb won't mind being stirred awake when their mom arrives with his tea, and until then Phineas can easily occupy himself with thoughts of what to do tomorrow. Besides, he can subject himself to a few minutes of quiet if that's what Ferb needs. What kind of a brother would he be if he couldn't, right?

Ferb half-consciously brings a hand to Phineas' wrist, as if it'll float off if he isn't holding on. He can feel his brain shutting down, and he welcomes the change. The last thing he's aware of before his consciousness finally leaves him in peace for a moment is the sound of Phineas' voice, promising him, "You're gonna be okay."