The day he got his powers... but something weird happens.

As he waded through the ethereal river of the Speed ****, Barry focused on the date, the exact moment he needed to return to. His mother's voice echoed in his head, a soothing lullaby amidst the temporal maelstrom.

Suddenly, the streak of yellow light spiraled out of control. Barry was jettisoned from the Speed ****, sent hurtling towards an unintended destination. He crash-landed into a scene all too familiar.

"W-where am I?"

He found his Flash suit had been replaced by his labcoat and tie. Bewildered, Barry looked around. He was in the CCPD's old forensics lab! He used to work there as an intern before... wait a second.

"Where's my suit?"

He examined his hand, noticing his Flash ring was also missing. Hesitantly, he checked the calendar. January 3rd, 2018.

"That's... the day I got my powers...?"

The dots connected.

"No, no that can't be right! I was supposed to go back further than this..." he furrowed his brows. "I'll just... run back to the present. Bruce was right. Time stuff, off limits," Barry suddenly got cold feet about the whole thing.

He went to summon the Speed ****, readying himself to run faster than light itself. The blonde took off through the laboratory, stumbling over a stool and clumsily clattering to the ground.

"Ow! What the hell... I-I'm not fast?"

The realization donned on him.

"I don't have my powers yet...? Is that why I can't go back further...?"

He mused. Maybe it was a good thing he didn't run all the way back to the day of his mom's ****, then? There was no other Barry around in the lab, so he must've assumed the position of himself at that point in time. Had he made it all the way back, he would have been a powerless child watching his mother die. Or at least, that much he theorized.

It's not like there's a rulebook for time travel. His guess was as good as any.

Thunder roared outside, the rain picking up.

"That's right. I get my powers tonight!"

He knew what was going to happen tonight. The impending thunderstorm, the bolt of lightning, the shelf of chemicals. He just needed to recreate the circumstances. Easier said than done, but if there was anyone who could pull it off, it was him. He'd run back to the present and never try this kind of thing again.

Hours passed as he carefully positioned everything, right down to the last vial. Just as the first peals of thunder echoed through the night, Barry positioned himself, steeling his nerves for the pain he knew was coming.

ZAP!

As if on cue, the glass window shattered, and a bolt of lightning struck him, sending him careening into the shelf of chemicals. The surge of electricity coursed through his veins, the pain intense and debilitating. But amidst the agony, he felt a sudden alteration that was more than just the acquisition of powers.

As the electricity from the bolt surged through Barry, he could feel his body contorting, reshaping. It wasn't just the familiar sting of electricity, but something else entirely coursing through every cell. His skin seemed to vibrate with the energy, tingling as it began to soften and smoothen. Time slowed down around him as the rain outside froze in place.

His jawline, once sharp and angular, felt different. His hand shot up to his face instinctively, feeling the contours melt into softer, more feminine lines. His cheeks were becoming less hollow, fuller, and softer to the touch.

At the same time, he could feel his hair growing, each strand lengthening and thickening at an alarming rate. It spilled over his shoulders in thick, wavy tresses, changing from his usual short, locks to long, flowing blonde waves. He pulled a strand in front of his eyes, the golden hue catching the ambient light, shimmering like a strand of precious metal. It felt different too, silkier and more luxuriant.

"Why is my hair so long...?"

Barry's heart pounded in his chest. He could feel his muscles shifting and toning down, becoming less bulky, more lean. His limbs were growing slender, his waist was thinning, and his chest...

Barry could feel the changes continuing in his chest, a sensation that was strange and undeniably unfamiliar. He could feel his pectoral muscles twitching, but it was not the usual kind of muscular spasm he was used to experiencing during his workouts or missions as the Flash. This was... different. It felt as if his body was filling up, a sense of expansion in his chest that was utterly alien to him.

"Huh?"

The fabric of his shirt, once loosely hanging around his flat chest, started to tighten. The pull was gentle at first, almost imperceptible, but soon the feeling was undeniable as the fabric strained against a growing pressure. His eyes widened as he felt the slow but steady swell of his chest, the tissue expanding and taking on a shape he'd only ever admired on women before.

"Boobs?!"

Completely caught off guard, his hands reached up almost unconsciously to the swelling mounds on his chest, cupping them over the fabric of his shirt. His fingers sunk into the newly formed flesh, a gasp escaping his lips as he felt the strange, undeniable softness. The mounds were firm, yet soft, and they rose and fell with each deep, shaky breath he took. He tried to press them down as if to stop them from growing more but to no avail.

"H-hey! Stop! I don't want tits!"

Refusing to cave to his demands, they continued growing and swelling further until a button burst free from his shirt from the strain. His once flat chest was now adorned with a pair of round, full breasts, prominent even under the bulk of his lab coat. They sat high on his chest, the shirt stretched taut against the new contours of his body.

Meanwhile, the unfamiliar sensation started to grow in the lower half of his body. There was a strange feeling of expansion and a peculiar kind of tightening in his lower backside. Glancing back at himself in the mirror, his eyes widened in disbelief as he saw himself. Except he now had long voluminous blonde hair, full pouty lips, thin arms, a thin waist, and ample breasts. The rest of his form still looked quite male, though he had a feeling this wouldn't be the case for much longer.

His typically slim, toned runner's ass began to change shape, swelling and curving outwards. His lab trousers strained against the expanding curvature, struggling to contain the burgeoning form beneath. The rapid transition sent ripples of strange discomfort through his body, although not exactly painful, the transformation was intense and deeply unsettling.

Barry gingerly reached back, hesitating for a moment before finally placing his hands on his newly formed rear. He could feel the firm, rounded muscle underneath his palm, a striking contrast to the flat, slender form he was used to. His fingertips traced the plump contour, the sensation so foreign yet oddly mesmerizing.

His once lean and athletic body now held a distinct voluptuousness, the new curves giving him a more feminine silhouette. His new bubble butt perfectly rounded off his now distinctly female form. Barry found himself torn between awe and confusion.

His male anatomy was shifting, the organs and tissues rearranging themselves. His skin seemed to ripple and shudder as his dick and company retracted, disappearing inside his body. An intense shiver ran up his spine, a wave of confusing pleasure following it.

Then came the emergence, the manifestation of a new opening that hadn't been there before. It felt like a bud blossoming, the new organs forming from the ones that had disappeared. Testicles dissolving into ovaries, his hips cranking wider and wider to support his developing womb. This was a sensation he had no reference for, a feeling so foreign yet instinctually familiar, sending ripples of unexpected pleasure through his body as his clitoris took shape.

His body heaved with every gasp as new, sensitive folds of flesh formed, the smoothness of the new organs a stark contrast to what had been there before. Barry collapsed to his knees, overwhelmed by the cacophony of euphoria surging through his brand new genitals. He clenched his eyes shut, gripping the cold floor beneath him as his body writhed in response to the changes, the pleasure intensifying with each passing second.

A soft moan escaped his lips, now her lips, the sound surprising her in its pitch. The pleasure was blinding, overwhelming, forcing a gasp from her lips.

"W-why does this feel so—AH!"

She squealed, hunching forward, burying her face in the tile floor as she fished her hand down her ill fitting lab pants, prominently displaying her round ass. Her thighs expanded generously as her manicured fingers barely grazed her entrance, sending wave after wave of unbridled ecstasy through her newfound form. Her cellular makeup finally snapping from XY to XX, rocking her to her very core with unwanted delectation.

"No, this can't be happening. I must be hallucinating. This must be some side effect of the lightning. I need to calm down and think."

Staring at her reflection in a piece of broken glass, Barry felt a sinking feeling in the pit of her stomach. Staring back at her was a woman's face, her features soft and delicate. A flash of the blonde, long, wavy hair fell across her face, the same piercing blue eyes staring back at her.

"No...this isn't just a hallucination. This is real. I've... I've changed somehow!"

None of this made any sense! The lightning and the chemicals gave her her powers! They didn't turn her into a chick!

"Wait a second..."

Barry squinted, realizing the rain was frozen outside. She had her powers back!

Focusing, she slowed her vibrations down to normal speeds, the world resuming as if it was on pause.

"I have my powers back, at least... I can run back and get some help from the League!"

Barry clung to some semblance of optimism. Bruce and Clark were definitely going to read him the riot act for trying to mess with time, but they'd help him fix this at least.

On command, her body's vibrations picked up. Familiar arcs of lightning picked up around her, though as she bolted forward, her clothes changed to a familiar scarlet speedsuit, though this time one made to fit her feminine form with an open cowl to accommodate her blonde hair. Bolting through the Speed ****, a symphony of light engulfed her as she sprinted past the speed of light and through time itself.