This is a fanfic of Conan/Haibara by me. Sorry if I'm not good at English. Please enjoy the story.

Disclaimer: I don't own DC.

Prologue: A baby was staying in Hakase's house, but Hakase didn't have a time to baby sitting him. So, Haibara decided to make a switch on the job. Conan also helped her, too. Are they going to make it through? There's only one truth! (My favorite motto ^_^)

Chapter 1: Baby Sitting

"Oh. Is that so?" Haibara asked.

"Yes," Hakase said. "He will be arrived here tomorrow."

"So? How long will you be back?" she asked.

"Uh... only 3 days," he said, hesitated. "Is that okay for you, Ai-kun?"

She glared at him and she thought in her mind, just tell me that you're expecting me to switch on your job. "Fine," she said. "Bring him to me tomorrow."

"Okay!" he said cheerfully.

He sure is not quite responsible for a man, she thought, uh… maybe not quite planned.

DING DONG.

Hakase's house doorbell rang.

"Oh. It must be her!" Hakase said while walking towards to open the door. When he opened it, he saw a woman. And as he expected, the woman's 2 years old baby in a baby cart.

"Good afternoon, Agasa," the woman greeted.

"Good afternoon, Tsuchikawa-san!" he answered with smile. "Please come in and have a tea."

"Ah, no. I'm in my way to the hospital. I just want to escort my child here."

While they were talking to each other, Haibara approached them from behind Hakase.

"Oh yeah. What's his name?" he asked.

"Oonan Tsuchikawa."

Haibara's eyes widened when she saw a cute face on the sleeping baby. She realized that the baby's face was as adorable as an angel. However, she hadn't seen babies much since she was still in Black Organisation. What she saw was totally opposite of it. Such as, drugs, death mice, and blood. That was her reason why she hated so much the organization.

But fortunately, when she saw this baby face, her bad memories of evilness were totally forgotten.

The Hakase was already on his way to Hokkaido. Haibara had watched him leave. While she was preparing hot milk, she heard the doorbell rang. She walked towards to open the door.

It was Conan.

"Hi," he greeted, smiled in his face. "I heard from professor that you're keeping a baby for 3 days."

"I don't need your help," she said as she nearly closed the door. Unfortunately, he grabbed it.

"I'm bringing homemade burgers from Ran. She made them for two. So we can eat them together," he said, still hooking the side of the door with his fingers.

"Hmph," she glared at him as she opened the door. "Come in."

Couldn't you just not put me down as a stranger? he thought while he walked in, also glaring at her, but was stopped while he saw a bottle of milk in her hand. "Hmm? Is the milk for the baby?" he asked.

"Yeah. What about it?" she asked him back.

"What's the baby doing now?" he asked another.

"He's sleeping now. I'm planning to give him the milk," she answered.

"No. Don't," he told her.

"What?"

"Babies are usually hungry when they wake up. It's not good for them if you just give them the milk. Try giving them porridge for babies as occupy, then the milk. So, they won't be hungry again too fast. And you should check the temperature of the milk. Babies only like to drink it when its heat is as same as their body. 37 degrees are enough," he explained.

"Well, I guess his mother left some instant porridge in his cart," she said, looking inside the baby cart. "I should've to make it before he wakes up."

He glanced at the baby. "No. I think he already wakes up."

"Eh?"

"He really has eyes like an angel," he said as he smiled.

The baby sure has.

She walked to face the baby. "You're right," she said, feeling warm inside her body while she lightly touched the baby's body with her hands.

"I'll make the porridge!" he exclaimed as he ran towards the kitchen.

Meanwhile, Kogoro Mouri was staring off at the street from window. Too bad, that he hadn't got any client for a week. Seemed that the criminals were too fooling around for the too clever polices in this century.

"Damn that kid. What is he doing all this day?" he said as, glaring while he flamed his cigarette.

"Conan-kun is helping Ai-chan baby sitting that was asked to switch on. The mother is having a heart disease. So, she has to stay in hospital for 3 days," Ran explained.

"Hmph. It's just as same as that brat," he said, "staying here forever in the end."

"It can't be helped if Hakase really doesn't have time to do it," Ran said, preparing the dinner dish.

Click.

The door was opened.

"I'm home," Conan said.

"Oh! Welcome home, Conan-kun!" she said. "How was the baby sitting?" she asked.

"Worked smoothly," he answered as he put his backpack on the table. "Don't worry. I think she had already learned how to care a baby."

She smiled. "I feel sorry for her that she can't go to school while caring the baby," she said.

"I'll tell her if there is any homework," he said. "I'll go help her again tomorrow."

"I'll go help too!" she shouted.

RRRIIINNNGGG.

The Teitan elementary school bell alarmed, giving a sign that the school lessons were already over.

"Haibara-san didn't come to school today," Genta said. "Did she get sick?"

"We had asked Conan-kun, but he said that she is getting a serious disease," Ayumi said. "He told us not to come to see her right now. I wonder why."

"And now he went home early," Mitsuhiko said, glaring off. "I don't think there is any homework today."

"Oh yeah! Let's call her by phone!" Ayumi suggested. "I guess it won't bother her!"

"H-Wait. Isn't that Haibara-san?" Mitsuhiko asked as he pointed towards a blonde haired girl in front a baby items shop.

Genta raised his eyes to focus his sight. "Hey. It's really her!" he shouted.

"What is she doing in front of that shop?" Mitsuhiko asked curiously.

They watched her walking inside the shop, trying to wait and see what she was doing. When she had finally been off outside the shop, they identified things she had bought.

"Instant porridge…" Genta said.

"Milk powder..." Ayumi continued.

"L-Layette!?" Mitsuhiko yelled out, unbelieved for what he just saw.

"EEEEEHHHHH!?" Genta and Ayumi cried out.

Mitsuhiko rubbed his chin. "Why did she buy those kinds of thing? Is she in job of caring a baby?"

"She can't be possibly using it," Ayumi said.

"M-Maybe she is pregnant," Genta guessed, hesitated.

"Eeehhh!?" Ayumi yelled out.

"Haha. Impossible. She is still under age," Mitsuhiko said. "If she is really pregnant, she would probably..."

"Oh! Conan is approaching her!" Ayumi said, looking in distance at Conan running towards Haibara.

"... burst out…" Mitsuhiko continued as he got astonished by looking at Haibara...

"UUWWEECCKK!" Haibara burst out as she tried to hold it up.

Conan tried to help wiping her mouth with his handkerchief.

End of Chapter 1

Haha. It doesn't seem right if Haibara got pregnant. Well, who knows if it's true? Please review!