Author's Note : So this is my first Black Jack fanfiction. I make this because I want to after watched the anime again (Black Jack, Black Jack 21, and Young Black Jack) I pick the time setting on Black Jack anime 2004 and Black Jack21. There will be my original chapter, and then I will add a story from anime too :) For names, I'm using a Japanese way to read a name so family name in front. I'm sorry for my bad English, because English is not my mother language.

Disclaimer : Black Jack belongs to Osamu Tezuka. I just own my OCs Laura and the others who will come out.

This is Black Jack x OC. If you didn't like OC pairing, it's okay. You don't have to read it. Enjoy the story and if you don't mind leave a review :) Follow and favorite~


Prologue :

In the afternoon, somewhere in Japan. There's a house on isolated cliff above the sea, and inside there's a man who has a black and white hair, piercing hazel eyes, and two different skins sat on the sofa while reading a medical book. Meanwhile, inside his office. A little girl with an orange short hair humming happily while cleaning the office room floor, until she hit books and papers on the table with broom handle which made it fell to the floor.

"Ah! ohmigewdness!" She said as she pressed both of her cheeks. "It's bad! It's bad! I need to clean it up now!"

The little girl picked up the books and papers immediately and put it back to table. When she put the last book, something fell out from the book which caught the little girl attention.

"Hm? What is this? Eh!?"

She picked two photographs from the floor, and saw the first photo which have a little boy with black and white hair who is around eight years old stood beside a shoulder length black hair little girl who is around two years old showed her big smile. She saw the second photograph which surprised her more because it shows a young adult black and white hair man with a hip length black hair teen girl who is smiling beside him. The little girl felt jealous and ran to living room with two photographs she found.

"Doctor Black Jack! Doctor!" Pinoko shouted while ran to living room which made a black and white hair man who now known as Black Jack stop reading his book to look at her.

"What is it, Pinoko?" He asked before he closed the book and looked at the little girl who now known as Pinoko.

"Who is she!? Is she your sweet heart!?" She asked with suspicious face and jealousy as she showed the photographs to Black Jack.

Black Jack saw the photos and sighed before he took the photos from Pinoko's hand. "She is my childhood friend. It's already been years I haven't met her." He said as he looked at the photos.

"Childhood friend? Tell me... did she had crush on you or not?" Pinoko asked as she stared at him.

"Why do you want to know?" Asked Black Jack as he raised his eyebrow.

"Because it's a wife's job to protect the husband from any women." She said. "So... Tell me."

Black Jack sighed, "If you really want to know about her story, you can just tell me without hiding it."

Pinoko glared at him, made Black Jack chuckled. "Well... It's about 20 years ago, when I met her for the first time..."

Flashback (20 years ago) :

At the hospital, a young boy who is around eight years old fell down from learning to walk. He still needs to practice his body after big surgery.

"Kuroo-kun, are you okay? Don't push yourself too hard." Said the nurse who accompanied him as she tried to help him.

"Don't touch me! I'll get up on my own!" Said the young boy who known as Kuroo.

He got up and tried to walk again, ignoring the nurse who worried about him. But after walking for a few steps, he fell down again and he felt the pain from it.

"Ungh...!"

As he tried to get up, he got a feeling he is being watched by someone and he looked up to see who watched him. He saw a little girl around two years old with shoulder length black hair, and black eyes wearing a baby blue dress with white shoes and white socks. That little girl stared at him while still holding the door in front of her.

"Huh? Who are you?" Asked Kuroo. But the girl just stared at him as she tilted her head slightly with curious face, which made Kuroo felt uncomfortable.

"Ah, Laura-chan. Are you checking your health again?" Asked the nurse smiling at the little girl who now known as Laura.

Laura smiling and nodded at the nurse. She stared at Kuroo again and walked slowly toward him. After she stood in front of Kuroo, she stared at him again made him confused.

"W...Why are you staring at me like that?" He asked.

Laura kept staring at him before she smiled and pointed his face. "Your face... Looks cool!" She said smiled innocently at him.

"W...What?" Kuroo stared at Laura, surprised at her reaction. Mostly everyone scared or feel disgusted by his face except his savior Doctor Honma Jotaro. But this is a first time someone didn't scared of his face.

"I said, your face looks cool!" Said Laura smiling at him. "It's unique~"

"Laura-chan, I think the doctor is waiting. You need your checkup now, because your mother and father are waiting too." Said the nurse hurriedly to Laura.

Laura pouted and then nodded. "I will come again. It's really nice to meet you~!" She said smiling and then she walked out from the room leaving Kuroo and the nurse.

"Who is she, nurse?" Asked Kuroo as he tried to stand again.

"Her name is Nakamura Laura. She is half-Japanese, half-England. She comes here almost every day for check up her condition." Said the nurse.

"Her condition? What happen to her?"

"She has asthma, poor girl... She's still two years old but already having a sickness, which she got from genetic." Said the nurse bit sad about Laura.

"She is two years old! But she can speak fluently..." Said Kuroo can't believe that little girl is still two years old.

"Well, her parents said she is a genius and have IQ 160. But I don't know that is true or not." Said the nurse smiling.

Kuroo just nodded, and he continued to practice walking again. He decided to forget about the girl even thought he is curious about her.

Few hours later, it's almost 4 p.m. Kuroo lay on the bed while watching outside from window. He remembered about his mother's word to forgive his father, but he can't forgive him because he left with another woman. Leaving him and his mother alone. Suddenly, he hears the door opening, and saw a same girl from earlier.

"Good evening~! Can I come in?" She asked smiled at him as she hugs a book which she brought from home.

"Yeah, sure." He answered.

Laura smiled happily and walked toward him and sat on the edge of the bed. "My name is Laura! Nice to meet you." She said smiling at him.

"I'm Kuroo... Hazama Kuroo." He said and nodded a bit at her. They stared at each other for a few minutes before Kuroo sighed. "Why you're not go home yet? Your checkup is done right?" He asked.

Laura nodded. "Yes, but my father and mother still talking with other doctors. That's why I come here to play with you. Because I promise to come here again, right!" She answered before she showed her book called Hansel and Gretel. "Do you want to read together with me?" She asked him with innocent smile.

Kuroo looked at her, and he nodded. "Sure, I'm bored anyway."

Laura quickly move to sit beside him, and they begin to read together until it's time for her to go home.

"I need to go home now... Tomorrow I will come again with a new book!" She said.

"No... I think I can't. Because I want to practice walking again all day." Kuroo answered which made Laura pouting.

"That's too bad~ hmmm... Maybe I can help you training?" She asked.

Kuroo shook his head and smirked at her. "You can't help me training, you are still a little girl. Beside you are still two years old." He answered.

Laura glared at him and slapped him right on his face with her book. "Even though I'm still a little girl. At least I know the basic of rehabilitation! You know!"

"Ouw~ and how do you know that?" He asked as he touched his face.

"Because I read the book about it. So I will come again and helping you!" She said as she stared at him. "I need to go home now. Good bye Kuroo-kun~" She said smiling and ran out from his room.

Kuroo sighed and show a little smile before he lay his head on pillow. "Strange girl... But she is also funny." He thought.

The days went by, Kuro and Laura become close. She always help training him even though he always told her that he want to do it by himself which made her pouted and just sat on the chair after hit his face with book or pillow. Later that evening, Kuroo still training to walk while Laura looked at him to see a progress.

"You are progressing. That's good Kuroo-kun!" She said while clapping.

"But, it's still not good enough! I want to walk as soon as possible!" He said felt depressed.

"Why? Are you wanted to find someone?"

Kuroo silent for a moment and he nodded. "My father... I want to have my revenge on him for leaving me and my mother. And I want to find people who destroyed me and my mom's life!"

Laura surprised from hear her friend's answer, she stared at him and look down at the floor. "Is... that revenge... Really that important?" She asked quietly, but Kuroo hear it.

"A little girl like you will never understand my feeling! Because you still have both of your parents and live happily!" He answered which make Laura flinched and slapped him right on his face.

"Don't say that! You don't understand my feeling too! You are so selfish!" She shouted while she keeps hitting Kuroo with her little hands.

"Ow! Ow! Stop it Laura!"

Suddenly, Laura stopped hitting and felt difficult to breath and started coughing. Kuroo saw her and began to panick.

"Laura! Are you okay!? Nurse! Doctor! Doctor!" Kuroo shouted as he holding Laura's body while she kept coughing and tried to breath.

Few hours later, Kuroo wheeled his wheelchair to Laura's room where he saw her stared at the ceiling while wearing an oxygen mask to breath. Laura felt someone stared at her and turn her head around to saw Kuroo, which made her smile.

"Kuroo-kun~" She said weakly and waved her hand. "I'm sorry, I make you scared..."

Kuroo shook his head. "It's okay, you didn't scare me. Well... maybe a bit." He answered made her giggled. "Are you okay, Laura?"

Laura nodded "I'm okay! My mother and doctor said that I got too emotional or excited. But overall, I'm okay!" She answered happily.

"Your mom is a doctor?" He asked and Laura nodded.

"Yes, and my father is the owner of a large company and have a partnership with a lot of hospitals." She answered.

"But... If your mother is a doctor, why she can't find a medicine or healing you?"

"Umm... I read from the book, that... Asthma can't be cured permanently. So that's why, I will keep have this sickness even I am healthy."

Kuroo looked down sadly. He thought it is his fault for making his friend stressed. Laura saw his reaction and patted his head.

"Don't be sad. It's not your fault, Kuroo-kun. Let's forget about my sickness, okay?" She asked smiled at him. "Hey... Kuroo-kun. What do you want to be when you grown up?" She asked again.

"Hm? I want to become a doctor like Doctor Honma. So I can cure people from sickness, including yours." He answered which made her smile. "What about you, Laura?" He asked.

"I want to become a doctor like my mother! So I can help people from sickness, so they don't have to become like me." She answered.

"Really? Are you sure?"

"Of course! Why?" She asked confused.

"Because I'm worried if your asthma came out again." He answered worried.

Laura smiled, "It's okay, I will take care of myself. So you don't have to worry about it! But thank you for worrying me, Doctor Kuroo~" She said as she giggled, made Kuroo blushed.

While they were talking, two doctors come inside Laura's room. One doctor is short man doctor with big nose, and the other one is tall woman with blonde hair and light blue eyes.

"Ah, Kuroo-kun. You are here. Said the male doctor.

"Doctor Honma." Kuroo said surprised to see his savior, Honma Jotaro.

"I thought I would find you here, since you two are close friend." Said Honma smiling at both of them, made Kuroo bit blushed.

"Laura, are you alright now?" Asked the female doctor.

Laura nodded. "Yes, I'm okay mother. Oh, meet my friend mother! His name is Kuroo-kun. Kuroo-kun, meet my mother, her name is Nakamura Maria" Said Laura smiling.

"Nice to meet you Kuroo. I'm happy I can finally meet you." Said the female doctor who now known as Nakamura Maria.

Kuroo nodded a bit, and he looked at the doctors checked his friend's condition and waiting them done their work.

"It seems your breathing is normal again, which is good." Said Maria felt relief and smiling at her daughter who looks so happy. Maria looked at her daughter and then Kuroo before she felt bit sad. "Laura, dear. I want to talk to you about something. Just the two of us."

Laura looked at her mother curiously, and nodded. Doctor Honma nodded and bring Kuroo with him out from her room.

"What is it mother?" Asked Laura confused and bit worried because her mother looked at her with sad face.

"Honey, I want to tell that tomorrow morning, we must move away from the city, because father and I want you to get better from your sickness." Said Maria which made Laura shocked.

"B... But! I don't want to leave Kuroo-kun alone mother! He will be lonely!"

"I know honey, I know... But we want you to get better. And you can meet him again after you get better, okay?"

"But... But...!" Laura began to cry, and cry while her mother tried to calm her down by hugged her and patted her head. She didn't want her daughter move too, but it's for her health that she must move faraway.

Next day, in the early morning. Laura were dressed in red dress with low pony tail hair tied with white ribbon. She sat on the edge of bed while her mother prepare the luggage. Her mother saw her daughter, and show a little smile.

"Don't worry, Laura. You will meet him again after you got better." She said, but Laura just sulking, made her mother sighed lightly.

Suddenly, the door opened made the mother and daughter surprised. "Laura, wait!" He got up from the wheelchair and walked slowly toward her even he fell to the floor few times, made her surprised and smiling.

"Kuroo-kun~ you walk!" Said Laura happily and stood up from the bed and waited Kuroo come to her.

Finally, Kuroo got close enough even he fell down after that. He stood up again and stay beside Laura. "I heard from Doctor Honma that you will move. Is that true?" He asked upset that his friend will go far away.

Laura nodded sadly, "Yes... Because mother said it's for my health. That is why I must move from here to get better. I'm sorry Kuroo-kun."

Kuroo felt sad, and after a moment he nodded to himself and looked at Laura. "Then let's meet again, after you get better! And I promise I will become a great doctor like Doctor Honma!" Said Kuroo while he stared at Laura's black eyes.

Laura smiled and nodded cutely. "And I promise I will become a great doctor too, like my mother. And we will meet again."

Kuroo hugged Laura's little body tightly, made Laura made a sound "oomph!". Laura hugged him too with her little arm. Maria smiled warmly at her daughter and her friend. She took out a Polaroid camera from her luggage, and began to turn on the camera.

"Laura, Kuroo-kun. Look at here."

They stop hugging each other and looked at the camera. Kuroo just stood beside Laura, while Laura smiling at the camera and the sound of camera came. After two pictures, Maria give one of the photos to Kuroo.

"This is for you, so you can keep remember about her. Thank you, Kuroo-kun." Said Maria. Kuroo grab the photo and nodded at Maria. Maria smiled and she walked out from the room with her daughter leaving Kuroo alone inside the room. Little did they know, Kuroo showed his tears while grab the photo tightly.

Back to present day,

Black Jack was done telling Pinoko the story about how he and his childhood friend met, while he still looking at the photo.

"Wow~ so she is a genius!?" Asked Pinoko in awe. "And you meet her again, right?"

Black Jack smiled and nodded. "Yes, I meet her again after fourteen years. When I'm still in medical school near graduating day. She's with her mother for study, while her father works overseas. But I only met her twice, which I'm glad her mother loves to carry a Polaroid." He said.

"So, after that you never see her again?" Pinoko asked.

"No. But I hope I can meet her again someday, introduce you to her." Black Jack answered.

"Introduce me as your wife?" Pinoko asked again smiling at him.

"No. It's already time for dinner. You cook some dinner then, while I must working in my office." He said before he stood up and went inside his office room.

"Aye aye doctor! I will make a great dinner for you!" She answered and began to walked to the kitchen.

Inside the office room, Black Jack sat on the chair as he looked at the photos of him and his childhood friend. He smiled and put the photo back inside his book. "I hope I can meet you again, Laura. I wonder how you are doing right now..."

Meanwhile in the city side of Japan, stood a two story house where there's a name plate outside the house called "Laurel Hospital". Inside the house, there's a woman around twenty two years old, with knee length black hair tied into low pony tail. She wore a light green knee-length dress with medical coat. She was writing a report about her patient before she stopped and stretched her arm.

"Ahh~ I'm hungry, I think it's almost time for dinner." She said before she looked at the two photos which have the same photo like Black Jack's have. She smiled as she looked at the photo. "I heard so many rumors about you... And I hope I can meet you again Kuroo... No... Doctor Black Jack."