DISCLAIMER: I DO NOT OWN DETECTIVE CONAN.

So guys, this is my second fanfic for DC (after A Different Turn of Events). I hope you guys like this too. Please enjoy!

Note: Advanced apologies for the OOC's.

Summary: Haibara was able to make a counter-effect for the Apotoxin-4869. She and Shinichi took it immediately and ended up switching bodies. (So yeah, I just repeated what I wrote in the description).

CHAPTER ONE: COUNTER-EFFECT

It was a late, rainy night and still the little girl with wavy auburn hair was up and typing at the basement. She couldn't sleep. She wanted this nightmare to be over. At least before graduating to the next grade of being a first grader she would change back already. Childhood memories with the Detective Boys weren't bad. But for an eighteen year old girl who already finished the first grade and even had a PhD, she's had enough of re-living what she already lived. Even Shinichi feels the same.

Hiding was over. The organization was gone. It was time to go back to their normal lives. Agasa said that even if Haibara grow back to her normal self, he wouldn't mind.

It was now at desperate measures that Conan was in the lab with her. This night was one of those nights. Although all he did was tell her how his life was before and how his life was now. Haibara was annoyed. She knew that a part of him blames her for everything that they are in now.

"Could you stop talking for once?" She couldn't take it anymore.

"Could you start working properly?"

The two had a stare down. But Haibara decided to cut the contact and start working again. Conan however provoked her.

"That's what I thought." He muttered but Haibara could hear it perfectly.

"I turned away because I was busy working with the ANTIDOTE!"

"That you've been working on since you got here!" He added. "And guess what, it never really had any permanent results!"

It hurts. It struck a nerve. Haibara might be a genius with a PhD but despite all that, she couldn't bring herself to make an antidote for the two of them so that their suffering could end. What a pitiful genius she was. She kept her eyes on the screen, typing and searching and scrolling. That detective is getting on her nerves.

"I couldn't finish because of your crappy mouth!" she shouted but she did not look at him.

"Oh so blame my mouth for telling the truth?!"

"For distracting and disturbing me from my work!" She typed hardly on the keyboard now, anger was rushing through her veins.

"Your work? What work? The drug? Well hilarious! I'm sure you did a pretty good job in making it and nothing good in making something against it!"

In anger, Haibara slammed her fist on the keyboard. It pressed Enter as it broke.

"Well what are you good at you jerk? You're pretty much nothing but a loudmouth!" She spin her chair around to face him at last, shooting him a death glare.

"I used to be the great Detective of the East!" he claimed. "But because of you, I have to work hard to get that back!"

The two continued to argue, not knowing that the screen popped a loading button of some sort.

"You know what, I'll stop creating that antidote! After all, I don't need it!" Haibara threw at him. Conan was definitely enraged.

"What did you say?!"

"Hakase doesn't care whether or not I'm a child, so I pretty much have nothing to chase as Shiho!"

"Haibara you selfish moron!"

"It's better than helping the likes of you!"

"Why you-?!"

Conan tackled Haibara at the chair. But the girl didn't hesitate on fighting back, pushing Conan off of her and jumping on top of him as he reached the floor. Conan rolled her over as she landed on top of him, pinning her to the ground.

It was then that the two heard a beeping sound from the computer.

"Eh?" the two ran towards the screen, forgetting that earlier they had a quarrel.

"What does it mean?" Conan said as he stared at the '100% Success' displayed on the screen.

Haibara closed the bar and scanned what she just did. Her eyes widened in surprise and Conan could only guess that it relates to the antidote.

"After I destroyed the keyboard, I probably pressed something to alter the formula and formulated this." She said, zooming in the results.

"It's the antidote?"

"I'm not sure. It looks like it."

"Well what are we waiting for? Quick!"

"I still have to make it. And test it."

"We'll test it together!" Conan said excitedly.

"Alright then, I'll see you tomorrow."