Disclaimer: I do not own any world from Harry Potter or Sherlock(BBC). All rights belong to J.K Rowling, Warner Bros, Steven Moffat, Mark Gatiss and BBC.
Author's note: Harry Potter and Sherlock timeline have been shifted so they would match up with the plot. There is going to be some character changes and original characters.
Timeline (Year of birth)
1900: Dumbledore; 1920: Juliet Kim, 1946: Voldemort, 1950: Bianca Black, 1955: John Kim
1970: Molly Prewett, Arthur Weasley; 1971: Bellatrix Black; 1976: Mycroft Holme, Andromeda Black, Morris Rosier, Lucius Malfoy, 1977: Narcissa Black, Hannah Kim; 1979; Sirius Black, Petunia Evans, Hannah Kim
1980: Lily Evans, Severus Snape, James Potter, Remus Lupin, Sarah Kim; 1981: Regulus Black, Sherlock Holmes, Joseph Kim
OC
Juliet Kim (Kim Ji Seon, 김지선): born 6th December 1920, Korean, Taoist wizard, married Marius Black,
Bianca Elizabeth Black: born 18th March 1950, Daughter of Juliet and Marius,
John Kim(Kim Jun Soo, 김준수): 20th March 1955, Bianca's cousin, Doctor,
Sarah Merope Kim, Lady Serpens ( Bi Yeon 김비연): 13th April 1980, Bianca and Voldemort's daughter
Hannah Kim (Hwa Yeon 김화연): 23rd March 1979, John Kim's daughter and Sarah's cousin
Howard Kim (Yeon Woo 연우 ): 17th July 1981, Hanna's younger brother and Sarah's cousin
Horatio Morris Rosier:29th July 1971, Evan Rosier's brother,
Prologue
6 pm, London, July 1977
"Well, it was a pleasure to meet you, Tom but I have to go to a meeting in thirty minutes," said Mistress Juliet Kim. Mistress Kim was a Korean Taoist witch. She had lots of white hair and wrinkles on her forehead which made her look older than her age. Her brown eyes stared at Tom trying to figure out more about him. Tom, who sat on the opposite side, was in his early twenties. He was tall even when he was sitting down. Tom had jet black hair and pale skin which made him look attractive. Even his sharp cold grey eyes made him look quite attractive yet dangerous.
"Is it already? It was a pleasure to meet you too. I hope we could meet again soon," said Tom as they headed for the doors. Mistress Kim opened the doors for him and replied sweetly, "Of course, we should meet again soon. I will call you when I am available. Until then, take care." After muttering thank you, Tom left the through the doors and disapparated.
After Tom left, Mistress Kim quickly shuts the doors behind her and sighed. Anyone who met Tom would agree with her that Tom seemed like a very nice guy. However, Mistress Kim knew that it was just an image. Mistress Kim did not have high trust in him, especially after she had talked to Dumbledore about him. Mistress Kim actually lied when she said she had a meeting to attend. She did this to stop her daughter, Bianca from meeting Tom. Tom would be a terrible influence to Bianca so she tried to keep them apart. She looked at where Tom had stood, one more time before thinking about what to cook for dinner.
Empty street, Knocturn Alley
As soon as Tom apparated to Knocturn Alley, his face turned sour and bitter. It was hard to put on a fake smile, it was even harder when you know she disagreed with your cause. He was only doing that so he could have a powerful witch on his side, but sometimes he wondered was it worth it. He decided to forget about it and walked a few miles before bumping into someone. When he looked up angrily, he found a woman who was in her late twenty. She seemed too busy to pick up her belongings to notice Tom. She had to be a witch as muggles could not get into Knocturn Alley. However, her clothes seemed very muggle like. Definitely, a muggle born. Disgusted by this, Tom spat, "Watch where you are going, mudblood." Then he shoved her roughly before trying to leave.
"It was you who was not looking properly and the last time I checked I was clearly not a muggle-born," she replied defensively. Tom glared back at the woman. Her clothes seemed like a typical muggle born clothes; a blue jean that looked ragged, a grey top and a pair of sunglasses on her head.
Tom scoffed at her and said, "Right, but your clothes shows that if you are not mudblood, you must be a blood traitor which is bad as a mudblood. Shove off." He was about to go when he heard the woman call.
"You are right. My clothes are muggle style but this is only because the people who call themselves, parents forced it on me," stated the woman. "My father is from the Black family but he is a squib and my mother, who is better known as Mistress Kim spends half her time with muggles. So does that answer your question?"
This had grabbed Tom's attention. He put on a fake smile and turned around to say, "When you said Mistress Kim, do you mean Juliet Black nee Kim?"
"Yes, of course. I mean who has the surname Kim and is called Mistress around here other than the Great Juliet Kim," stated the woman.
'Now that was Kim trying to hide,' thought Tom. She did look like her mother when he looked more closely. She had the same fierce look from her brown eyes and had short brown hair like her mother. Thinking it might not be a lost cause, after all, Tom talked to her gently, "I am sorry for the disrespect I displayed earlier. I just met your mother a while ago but I had no idea that she had a great daughter. Would you accept my apology for my rudeness."
She looked at Tom in surprise before replying, "It is alright. I was quite rude too. I accept your apology. You met my mother?" She thought for a while and said excitedly, "Oh, you must be the boy that my mother talked about." After seeing him smirk, she continued, "You seem nice, I wonder why my mother does not want me to meet you. It would be nice to talk to you more but I got to go. My mother is waiting. I hope I get to see you soon. See you later." She was about to leave when she turned back and said, "Oh, how rude of me. I forgot to introduce myself. I am Bianca Black but I prefer Bianca Kim. I hate being related to that father of mine."
Tom smiled and said, "You also do not get along with your father, I see. I am Tom, Tom Marvolo Riddle but I prefer Voldemort. See you, Bianca."
"Voldemort," said Bianca as she mused, "Very nice name. Well, I hope we can meet often." She walked around the corner before disapparating to her house. Voldemort looked at the empty space and smirked to himself. Just a moment ago, he thought to have Kim on his side was an impossible task but now he could see some hope in achieving his plan. Tom walked in the opposite direction while thinking about how to use this situation to his benefit.
Juliet Kim's house, 4th July 1980, 10 am,
Mistress Kim's house was dangerously silent. Nobody spoke as they ate. Juliet and Bianca often glared at each other but they did not speak to each other. Marius broke the silence by saying, "Bianca, you should apologise to your mother." Binaca simply glared at her father in distaste and kept eating. Marius sighed and said to Juliet, "She would have lesson her lesson by now. Please, Jul." Juliet looked at Marius and sighed. She was about to open her mouth when Bianca stopped her spoon down.
"I will not ask for forgiveness nor do I want," said Bianca before glaring at her father. She growled, "You. I don't need your advice from a filth like you." Bianca removed her plates with her wands while ignoring her parents' shocked and outraged looks. Bianca stood up and said, "다 먹었어요 어머니, 가도 되나요? (I have finished eating mother, may I go now.)"
"Sit down," said Juliet after composing herself, "I am not finished with you." She sighed before scolding Bianca, "How dare you speak to your father that way. Apologise." After staring at each other for a few seconds, Bianca sat down only to make the matters worse.
"Fine! It seems you don't get my point. I am keeping this child and I am going to do this with Tom. Secondly, that person is not my father!" shouted Bianca. Juliet was lost for words. Since when had her child become so disrespectful like this?
Juliet held Bianca's hand and said, "You misunderstood us. We are not trying to force you to give the child up and we will help you raise the child. But not Tom. Tom is evil, pure evil and I cannot let you be with that man."
Bianca felt sickness when she looked at her mother's eyes. What did she know about Tom? How dare she call Tom evil? Bianca glared at Marius. It was all her father and that old muggle loving cot's fault. Not only had they corrupted her mother, but also they were trying to influence her child and her. She could not allow that to happen. Bianca challenged Juliet, "Evil! Dangerous! You have been listening to that old fool, haven't you? He's the one who is dangerous. He is the one you should look out for, not Tom. Being with squib is one thing but befriending mud-bloods and blood traitors are another. You are getting mad!
Marius stood between Juliet and Bianca and said, "Bianca, this is getting way out of hand. We are your parents and you should not behave this way. I suggest you apologise now."
"I don't need an opinion from a lowly squib," scowled Bianca while glaring at her father.
Juliet bit back the urge to shout at her and said, "I thought I had made this clear. He is your father and you shall treat him with respect. I can't believe that..."
"AND I KEEP TELLING YOU, HE IS NOT MY FATHER!" interrupted Bianca. Bianca trembled in fury as she pointed her finger at Marius. Juliet and Marius just looked at her, unable to speak due to shock. "Do you know how the others think of me! How they treat me! BLOOD TRAITOR, FREAK! Becuase He's a squib! because he cannot do magic. He is not my father. He is just a shame to us, our family, our society," said Bianca spitting out every word with hatred.
SLAP
Juliet, whose hand was shaking violently with anger, said, "How dare you speak about like that! How dare you! I thought I taught you better than that." Juliet fumed, "I will not have this kind of behaviour from my child. Go to your room and don't come back until you are ready to apologise. GO NOW!"
"DO YOU KNOW HOW THE OTHERS VIEW ME, OR US? BLOOD TRAITOR! BECAUSE HE'S A DAMN SQUIB! BECAUSE HE CAN'T MAGIC! HE IS NOT A FATHER, HE IS A SHAME. TO US, TO THE..."
Bianca glared at her parents once more before storming up to her bedroom. After she was gone, Juliet fell down and sobbed wondering where did it go all wrong.
7 pm, Marius' room
It had been eight hours since Bianca had been sent upstairs. Bianca stayed in her room and made no attempt to apologise for her actions. Marius was still furious. How could she do that? After all the thing that they had done for her. He could not forgive her for her disrespect. On the other hand, he felt as if it was his fault. He should have stopped her from meeting Tom three years ago. No, he should have seen this coming when she was sorted into Slytherin. He should have known how the others made her feel humiliated for being a squib's child. He should have known the influence her friends would have given her and stopped it. Feeling complex, he decided to at least try and have a conversation with her. Maybe it would help them understand each other. So he took up a tray of food and opened her bedroom. However, the room was empty except a note on the table. Marius stood there dumbfounded until he realised what happened. He quickly went to the table to look at the note which said, "I am not coming back. Don't come looking for me." Marius quickly took the note to tell his wife about this note.