Disclaimer: I own nothing in this except for the idea.

Please be gentle with me. This is my first time writing for this anime.

Conan was in the living room of Mouri Detective Agency. He was doing his incredibly dull and boring homework.

Kogoro wasn't helping either. He was watching Okino Yoko's latest show on television with the volume at maximum.

"Otou-san!" Ran said for the fifth time that day. "Will you watch that softer? Conan's been doing his homework since 8 o'clock and now it's 12 and he still hasn't finished!"

Actually it's because I didn't bother doing it, Conan thought, it's a complete waste of my time.

"You've got a call, Conan-kun," Ran said.

"Arigato, Ran-neechan," Conan said, taking the receiver from her.

"Shinichi?" Agasa's voice said. "Could you come over to my place for a while? Ai-kun needs to speak with you."

"Haibara?" Conan wondered out loud, "Why on earth…? Ok, I'll come over now."

Conan hung up. He stood there for a moment, wondering what Haibara wanted to talk to him about. He wasn't aware that Ran had overheard what he said.

"I'm going over to Agasa Hakase's (Professor's) house for lunch!" Conan said, running towards the door.

"Bye!" Ran waved. "Enjoy Ai-chan's cooking!"

Conan nearly tripped.

The only thing she ever cooked up was a drug, Conan thought as he walked towards Agasa's house. I swear, I'll never eat anything that comes from her…

Conan was so engrossed in thinking about what Haibara had to say that he didn't realize he was already at Agasa's house. He went in and saw only Agasa inside.

"Hey, Hakase," Conan said, "Where's Haibara?"

"She's in the basement," Agasa said, walking downstairs.

Conan followed Agasa down to the Haibara's "Lab" in the basement. Haibara was sleeping with her head resting on her arms in front of a computer, which was still switched on. There was a large, empty mug which smelled of coffee on the table as well.

"Ai-kun hasn't slept for days," Agasa said, looking at her, "She didn't eat anything I gave her either."

"What has she been doing all this time?" Conan asked.

Haibara woke up. She rubbed her eyes and looked at Conan.

"Oh, you're here at last," She said sleepily to Conan, "I waited so long that I fell asleep…"

"Why did you call me here?" Conan asked.

Agasa left the room. Conan closed the door and looked at Haibara, who somewhat resembled a panda.

"Why did you call me here?" he asked again.

"I've… developed a drug you might find… useful," Haibara said, unsuccessfully suppressing a yawn.

Oh boy, here it comes, Conan thought.

"What is it?" he asked, feeling he might regret asking.

"It's the cure for APTX 4869," Haibara said.

"For real?!" Conan asked, excited.

"Don't get too excited," Haibara said, "The cure I've created for you will only let you stay in your 18-year-old body for 3 days."

"3 days?" Conan asked, slightly disappointed.

"Here," Haibara said, pulling out a pill from her coat's pocket, "If you want to take it, take it."

"What about you?" Conan asked.

"I have no reason to go back into my older body," Haibara said expressionlessly, "I have no one who misses me."

"What about Gin and Vodka?" Conan asked.

"Shut up," Haibara snapped, looking away.

There was silence.

"Look," Haibara said, irritated, "If you're not going to take it-"

"No!" Conan said immediately. "No! I'll take it. I'll… take it…"

"Hurry up and leave," Haibara said, yawning, "I want to sleep."

"Thanks, Haibara," Conan said, before exiting and closing the door behind him.

Haibara stood there, looking at the door.

"Baka…" Haibara whispered.

Conan went back to his own house and searched for some clothes. He put them on his bed and held up the pill. He looked at it, wondering if it could really give him 3 days to spend as Kudo Shinichi.

"I'm going to trust you this once, Haibara…" Conan said, swallowing the pill.

Conan thought it didn't work. Nothing happened. Suddenly, pain coursed through his entire body. He could hardly open his eyes. He rolled on the floor, trying hard not to yell. Rolling didn't help. It felt like he was rolling on a bed of needles.

But as soon as it began, the pain stopped. He lay on the floor, panting hard.

Grabbing his clothes and putting them on, he half crawled into the bathroom. He looked at his reflection in the mirror. There was no denying it: Kudo Shinichi was back.

Next Chapter: Day one begins! Shinichi goes and looks for Ran. What will they do together with one full day?

Sorry if this story sucks. Once 5 reviews say it sucks, I'll remove it. This is not a threat.

-Blue Hurricane