A/N: Yay~! I got off (or back on?) my lazy ass and started writing more Detective Heiji!

Did you guys know it was supposed to be a one-shot originally? :D It was!

Anyway, I haven't properly thanked you guys for reviewing (and if you're reading and not reviewing: naughty, naughty, naughty.)

Oh and Cassie M. M, I've created a community with all the shrunken Heiji fanfiction I could find (look for it on my profile under "communities") and also, I have a Shinichi figure, so if I update late your cyber-Shinichi-plush might get eaten!

I am so sorry it took me so long to write again, school decided to be a pain and I had to buckle down to get above 50% in a bunch of classes. xP

…The above was written in May… the below was written in May (up to "at Heiji") Here I am… in January, BEGGING for forgiveness in my utter terribleness in… living with… not… updating… due to laziness…

In short, I'm awful, I hit a roadblock in writing (because I never really had a plot and it was one of those "wherever the win take me" deals) …actually this is the first time I've actually TRIED to finish a fanfiction before starting a new one (I've had a great How to Train Your Dragon one in my head that I can't bring myself to write until I finish this) ...so here we are. Please forgive me.

… and if you can't, read Three Thieves by Ysabet, her and Nightengale have written the most elegent piece of Detective Conan fanfiction that updates weekly without fail.

Heiji, Shinichi, Ai and Ran slowly wandered down the Beika streets, following Ai's vague memory as she would pause here and there as she tittered down the sidewalks.

The Osaka-born detective held a glare at the sidewalks that could kill a man at forty paces.

Shinichi glanced down "Hattori, you look like a seven year-old with some sort of concrete-complex, brighten it up a bit." His voice held a touch of sympathy for his fellow detective.

Heiji grinned evilly secretly to himself and chirped back to Shinichi with "Sure thing, Shinichi-niichan! I sure do hope yer mom won't get mad that you're taking me and Ai-chan-" Ai snapped her head back to glare at Heiji "—to go get ice cream today!" with that comment Shinichi looked down and stared at Heiji, who in return showed Shinichi the majority of his teeth at once in a huge grin.

Ai hid a snicker behind the back of her hand, as Shinichi pinched the bridge of his nose to ward off a headache.

"I take it I've had this coming, right?" Shinichi grinned down at Heiji

Heiji continued his little-boy façade for the next few blocks until Ran pronounced herself fed-up with the shrunken Osakajin, picked him up, and carted around with him tucked under her arm.

Heiji blushed indecently, as Ran and Shinichi shared a private glance.

Finally Ai came to a halt in front of a gravel lot, the two teens, and newly shrunken-one by association, stopped short behind her.

"Why're we—" Heiji started to ask but Ran clasped her hand over his mouth at the same moment Shinichi shushed him.

Ai's head was bowed and her shoulders shook an amount so minuscule only a detective or micro scientist could've noticed, Shinichi was the latter.

"Haibara?" He asked as Ran and Heiji retreated a few steps out of eavesdropping distance "Are you okay? You seem—" he placed a hand on her shoulder freezing the tremors off her narrow shoulders

Her head whipped around to look Shinichi in the eyes "Stop, Kudo-kun. Just. Stop. Please?" She drew in a breath shakily "This is it. Where my lab is—was, I suppose." She amended, looking down.

Shinichi looked up, gazing at the flattened acre of monotonous gravel, where the source of the drug that took a part of his teenage life away and forced him into the body of a seven year old boy was created.

"I suppose there probably isn't really a permanent antidote then." Ai sighed "Well, Kudo-kun, you probably have," she looked at the inside of her wrist to the face of her watch "Approximately three hours left… at most."

Shinichi moved to protest at Ai's sudden about-face of personality, but his arguments were pulled to a full stop at a high-pitched string of heavily-accented Kansai curses extruding from the mouth of one very displeased dark-skinned boy.

When Heiji's nonsensical tirade piddled to an end, Ran pursed her lips, dropped Heiji on the sidewalk –Where he, thankfully, landed on his feet– grabbed the scruff of Shinichi's shirt, causing him to rise to his full height, deposited Heiji into Shinichi's arms, hitched Ai up on her hip, grabbed Shinichi's forearm and physically dragged two shrunken-teens and one recently un-shrunk one back to the Kudo manor.

Upon arriving back, Heizo and Shizuka immediately appeared from the dining room with Yusaku and Yukiko where they had obviously been drinking tea, as gathered by the still-steaming teacup Yukiko clutched in her hand.

"Oh, Shin-chan!" Yukiko keened at their arrival, ignoring her own offspring to comfort the shrunken scientist who was having some sort of mental shut down in Ran's arms.

Yukiko lifted Ai up into her arms, without so much as a complaint from the young woman and carried her off into an adjoining room on the premise of "girl talk".

"Well?" is all Heizo had a chance to say before the worlds of both Shinichi and Heiji went black.

Heiji woke up, woozy and completely unaware of his surroundings. He sat up, and smacked his forehead into that of one Haibara Ai, who was unfortunately checking his vital signs at that very moment, but was now half-sprawled on Heiji's knees rubbing her forehead with the heel of her hand.

"Ow~" they complained simultaneously.

Wait. Knees?

Ai was indeed perched on the now adult-sized knees of Hattori Heiji, who beamed at the little scientist.

"Hey!" Heiji exclaimed in pure joy at his fortune "Uhm… where's Kudo?"

"Look down." Came the dry response to his right elbow, where a very bored looking Edogawa Conan say crossed-legged in the lap of Mouri Ran who in turn sat on a chair next to Shinichi's old bed that Heiji had become acquainted with earlier.

Ai looked sourly between the two before launching into the explanation Heiji was undoubtedly going to ask for.

Ai sighed "As it turns out, my replication of the original batch of Apotoxin 4869 was faulty, it produced the desired effect, which was an understatement of mine, for shrinking the human body is not it's desired effect, killing is, and I failed to account for this, which is why you're transformation failed, as did my less-than-successful trial at an antidote." She turned towards Shinichi who was doing everything buy physically pouting "My apologies, Kudo-kun."

Shinichi opened his mouth to say something indignantly but was interrupted by Ran ruffling his hair good-naturedly.

And so it went, Heiji returned to Osaka accompanied by his parents; Shinichi continued to live under the Mouri roof solving cases from the sidelines – although there was an awkward explanation about a voice-changing bowtie and tranquilizer-dart watch in the process – with nothing exponential in the change of his and Ran's relationship besides her promise to wait, not for his return, but for his cure; and Ai continues to create a cure for her killing drug with unforeseen side-effects.

A/N: and there you have it. I did it! Me! The girl who hasn't EVUR finished a fanfiction (completed in storyline any way not just given-up) finally got one right!

I was kinda thinking of leading to a *gigantic* fluff-ending, but somehow it just didn't work out… wow… I started writing this (in May) at 11:00pm and now it's 12:55am… that explains why I can't open my eyes…

Bon chance, ma amis! Thank you for bearing witness to this historic event, for those of you reading on deviantART go read on … you font have to... but all the italics and bold n stuff is there… so yeah… and look forward to my How to Train Your Dragon fanfiction coming up… soon… next…

Same Bat-time, same Bat-channel!