John Watson was many things, a father, a fighter, a doctor but most importantly he was an Omega. He hid it very well in the army, but his heat hit and an alpha in his crew took advantage of that. Afterward, the Alpha was dishonourably discharged, and John raised his daughter. She never took the Alpha's last name. She lived on base with her dad until he was shot when she was 10. He took his daughter Chloe back to London and worried about what to do about living situations, suddenly John met Sherlock. They talked about it and after the first case John had moved in. He and Chloe shared a room, even a bed because she didn't like being too far from her Omega, Sherlock was an Alpha and Chloe wanted him to be with her father. She soon met Sherlock's brother Mycroft and his mate Greg. John had been getting to know Sherlock more and Chloe had heard that Sherlock was falling for John, so she did what any good kid would do and had them go on a date. When they came home, they were kissing, Greg and Mycroft had taken Chloe for the week anyway because of John's heat. So, Chloe got to play with all 4 of Greg's kids with his ex-mate who had cheated on him. She was playing with the three-year-old when Sherlock called. Mycroft was quick to answer," Yes brother mine?"
"Well, John and I have bonded. Chloe officially has an Alpha. Tell her that Dad and Papa love her please."
"Brother, that is a lot of sentiment, are you sure you're okay?" Mycroft smirked, and Greg smacked his leg. Chloe smiled still playing with Aurora, soon the kids were off to bed. She was being tucked in by Greg," Greg will I ever get an Alpha father?"
"Well sweetheart we were supposed to keep this a secret but John and Sherl have bonded. Sherlock is your Alpha now." She screeched in excitement and held onto Greg.
One Week Later (In the SpongeBob voice duh):
John was done with his heat and Chloe had gone back to the flat, as soon as she got home, she hugged Sherlock," Thank you for being my Alpha." He hugged back grinning, the small family went inside and watched movies on the couch. Sherlock could already smell that John was pregnant. He smiled holding his mate and his new daughter in his arms. He loved them so much, he soon fell asleep after they had the movie still playing. As they slept he dreamt of having many pups with John. When Sherlock woke up the next morning he found that John and Chloe were making pancakes and bacon while he slept to surprise him," And what do we have here? My family cooking without waking me."
Chloe nodded and John laughed nodding as well as walking over and kissing Sherlock. They all sat down in front of the fireplace to watch cartoons with their plates. Chloe also had a small cup of juice with her. She was giggling as they watched "Adventure Time" she was comfortable with the way they were living. Soon Milly and Siger came by and met Chloe and John. They loved the Watsons, Chloe put on her cute little yellow dress. She walked around knowing that she was super cute. Siger looked at his son," So William how did you meet John?"
"Well father he came back after being injured in the army and he needed a flatmate. So I met him and Chloe, soon after that they had moved in here with me." He held John on his lap as Chloe was playing with blocks and trucks. Siger was very proud of John, the Holmes family was a very progressive family feeling that all Alphas and Omegas had the same rights. John was very thankful that this is what he was putting his daughter into. He soon moved to the floor and Chloe played with him happily. She missed out on a real childhood due to living on an army base. She finally got to be a kid and John loved it. He was happy with being pregnant all because it was with Sherlock. He knew it would be difficult but he didn't mind at all. He really was excited to see Chloe and this other child grow.
9 Months Later:
John was finally giving birth to his twin boys. They had been able to renovate the apartment block to fit the big family they had wanted. So after many hours, Hamish and Johnathan Holmes were born. Chloe came and saw them, she was very quiet and calm for the boys but once she left she was bouncing around uncontrollably. Mycroft had to tell her to go to bed and had to give her warm milk in a sippy cup so she could have it in her bed while he told her a story of his family and how Sherlock had wanted to be a pirate. She was soon asleep and he went to lay with Greg and kissed his Omega. John came home a few days afterwards and all of them smiled cuddling into each other. The small family stayed like that for a long time before bed came. They all were very comfortable in a routine as they got used to having the babies around.
Notes: Hey so this is my first Sherlock ABO fanfic and I hope you all like it 3