Disclaimer: I do not own any of these charaters and am making no money off of this work.

There is another copy of this (with some changes) that is just a parent-child relationship under the name 'Jim's a Father now'.

There will not be any romantic feeling until about ch. 4 and no fruition of those until after that. The first few chapters are just John and Jim becoming a family.
If you have decided to read this then please enjoy! Also if it is not an inconvenience please comment or leave Kudos, it is much appreciated.

Chapters will be posted on a weekly basis so expect chapter 2 next weekend

James "Jim" Moriarty did not like children. They were loud, dirty and more often than not, self-centered little brats. He never planned to have a relationship, let alone have children. But then a little blond haired, blue eyed human ran into him.
He was just walking along the street, getting some air from the minions when suddenly there was a small body slamming into his legs. The body whimpered and scrambled back, looking at Jim with terrified, tear-filled eyes. Jim was ready to holler for the boy's parents when the child stood up tall and pronounced "I am very sorry for running into you sir." As if he did not look like he was going to start sobbing. That's when Jim noticed them. Blue, black and purple bruises just barely hidden from the world by threadbare shirt sleeves and pants. And the boy was gripping his arm as if it pained him.
"Wh…" Jim was cut off by a shout.
"John!" A large burly man followed by a timid lady who was holding a small girl came up. They were obliviously related, the man and boy shared a nose, the boy had the woman's hair and the little girls face and ears matched the boys. The man grabbed the boy's, johns, injured arm and shook the boy roughly. John did not make a sound, he did not even twitch.
Jim felt his anger grow. How could someone treat such a small boy like this, one who was so well behaved (though Jim dreaded the reason behind that.)
"Daddy!" The little girl shrieked. Her dress looked brand new.
"Yes, princess?" The man asked, a sickly sweet smile on his face.
"John 'eing e' bad boy again." The girl said, her words choppy and childish, an innocent look on her face. Though as soon as her father looked away she looked down at the boy smugly.
The woman set the girl down to give Jim her full attention, the man was still ignoring Jim presence, only making Jim angrier. Jim noted that the girl had to be younger than the boy, their speech patterns showing it. However, the girl was at least twice the boy's size.
"I'm sorry for my son," She glanced at the man who was now shaking the child and hissing something in the little ear. "We just can't seem to set him right." The woman gave Jim a small smile, obviously expecting the man to sympathize with her. Jim just barely avoided reaching out and strangling the woman.
"Yes well, boys will be boys."
"Yes, of course, have a good day sir." And then the family walked away, the father laughing as the little girl continually kicked and punched at the smaller boy.
Jim watched them walk away and found his mind being taken over by sad blue eyes and sandy blond hair. The boy was absolutely adorable to say the least. And he felt the urge to protect and take care of him. But there was not place in Jim's life for a child.
John turned back one last time and their eyes met, before the little one was harshly pulled away. Well then, that decided that.
Jim pulled out his phone. "Follow them, find out everything and get a medical team on standby at home. He hung up without waiting for an answer before heading to the nearest children's store.
He was going to have a guest soon.