A/N: I was trying to find a place to watch Mitsuhiko In A Forest of Indecision with English subtitles, but since half the sites are blocked in school I could not. If anyone knows where I can watch it, send me a link pwease! Its on Youtube, but with Chinese subs and I can't understand those. XD I love Mitsuhiko, so this little fic popped into my head. And yes, I'm using Japanese names. XD Mitshuko is Mitch in the English version.

I don't own Detective Conan.

Mitsuhiko's Suspicions

Chapter 1 - Spying

Conan and Ai were always talking together in secret. Sometimes Mitsuhiko would see them underneath a tree in the Teitan Elementary playground, instead of playing soccer, talking about something to each other, in hushed tones. Their faces had looked awful serious most of the time, and Mitsuhiko thought it was odd to see such seriousness on the faces of children. But then again, Ai and Conan were far from normal. They were smarter than Genta (well, almost everyone in the school was smarter than poor Genta), Ayumi, and hey, even himself. Though Mitsuhiko was bright for his age.

Today was pretty much just like any other. The rest of them were playing soccer, but he caught the other two talking in whispers again. Just what was going on that they had to keep it a secret from the rest of them? A plan was slowly forming in the boy's head.

He'd find out what they were up to!

School had just ended. They were going to the hakase's to play another game he'd invented, and hopefully not try another quiz. Ai and Conan were walking in front, Mitsuhiko behind them in the middle with Ayumi and Genta behind him. He grinned.

Perfect hearing point. Well, maybe. If they actually said anything. On the way to hakase's, they were both silent. Mitsuhiko let out a long sigh of frustration, and this caught Conan's attention.

"Are you alright, Mitsuhiko-kun?"

"Huh?" He looked up and suddenly saw that all eyes were on him. The boy sweatdropped, feeling slightly embarrassed. "Yeah, I-I'm fine. Really."

Conan looked suspicious, and Ai looked at him with slight interest. He blushed only slightly and looked away. The only reason he was suspicious of Conan and Ai was...

He thought they might like each other. Conan couldn't like Ai, he did!

Mitsuhiko shook his head back and forth and followed the Shonen Tantei-dan to the professor's house, distracted by his thoughts so he was a bit slower than the rest.

Conan and Ai glanced at each other, wondering what was wrong with Mitsuhiko. He was a smart boy, and it wasn't often he was so bothered by something like this. They both knew that.

Soon they reached hakase's, and they were drinking hot chocolate as they played the hakase's new game. Well, everyone except for Conan and Ai, who weren't playing, but simply sitting on the couch sipping at their own hot chocolates. Mitsuhiko frowned. They certainly did seem like a couple.

"Hey, Mitsuhiko, you lost," Genta commented with a frown.

"Eh?" Mitsuhiko looked back up at the screen and paled. "Ah, I did!"

"What's wrong, Mitsuhiko-kun? You're usually good at all of his games," Ayumi pointed out and Mitsuhiko sighed again.

"It's nothing Ayumi-chan, I've just been thinking a lot about stuff so I haven't been concentrating on much lately," Mitsuhiko replied. Ayumi frowned. Thinking about what? But, if Mitsuhiko wanted to say, he would, so she left him be.

After Ai was done her hot chocolate, she set the empty cup down on the coffee table and headed downstairs towards the lab. Conan watched her leave, and once he heard the door close, followed. Mitsuhiko blinked. Perfect!

Now was his time to find out! Were they really going out?

While Ayumi and Genta were into the next part of the game, Mitsuhiko quietly tiptoed downstairs. Making sure Conan wasn't there and the door was shut, he pressed his ear against it and listened in.

"Here."

"What's this?"

"A temporary cure to the APTX-4869. You should be Kudou Shinichi for twenty four hours."

...APTX-4869? What was that? From the way Ai said it it sounded like some sort of poison. Was Conan poisoned? Then he'd be dead or at least in some sort of pain...right? He seemed fine earlier.

"You should be Kudou Shinichi for twenty-four hours..."

Why did Conan want to be Shinichi? Because he admired the guy so much? Maybe he thought if he took the drug he'd look like Shinichi for a while.

"Wow! Thanks, Haibara!"

"Use it wisely, Kudo-kun. You're aware I said it'll only last twenty-four hours, yes?"

A sigh came from Conan. "Yes, Haibara..."

APTX-4869. Ai created some sort of drug. Conan was being called 'Kudo-kun'. Mitsuhiko frowned. How could Ai even create a drug? She was only an elementary school student?

"Mitsuhiko-kun, what are you doing?"

"Ack!" the freckled boy looked behind him and saw Genta and Ayumi at the top of the stairs. "Shh! Shh!" he whispered, putting his index finger up to his lips. He tried to listen again, but it had gone strangely quiet in there.

Darn, he needed to know more!

But the pieces were slowly coming together.

TBC

A/N: Hehe. Like or no? Like I said, I love Mitsuhiko, and think he and Ai should be together. She'll stay a kid of course. XD I do like Ai and Conan too, but I was a MitsuAi shipper first. I even made the first AMV for them on Youtube! Check it out, it's called Kiss the Girl.

And it sucks that you need a cellphone to make a youtube account now...T.T What about the people who don't have one or don't want to give out their number?

What do you think Mitsuhiko is thinking about their conversation in the lab? Has he figured it out?