Before Naru was born, Kakashi and his father were the closes things to biiju that the village had ever seen due to their bloodline traits.
They were the fastest, strongest, and most intimidating people around. And not for just any reason either.
Sakumo before he'd been drafted to fight in the shinobi war as a nin, had been just another citizen with some extrodinary gifts. He'd had a wood shop where he made figurines, furniture and such. He'd been a fantastic hunter and expert craftsman.
Then about the time Kakashi's mother had become two months pregnant with him, Sakumo Hatake's wife had gained the notice of a man who started stalking and harassing the couple.
One night during dinner said admirer had had some sort of emotional breakdown when he'd seen Sakumo kiss his wife and had broken one of the kitchen windows and sent glass scattering everywhere. Sakumo's wife had been so scared that she had nearly miscarried right then and there in the kitchen.
Sakumo had seen the blood running down his wife's legs and had just lost his cool. What man wouldn't?
He'd lowered his wife into the closest chair and gone barreling out of the house after the son of a bitch. He'd caught him before he could hit the main street just off of Sakumo's property and had dragged him a good twenty feet away from the yard's gate and had ripped the man apart like a wild animal then had gone back, grabbed his wife and headed to the hospital as fast as he could.
It had taken a while but after about two in a half hours his wife's condition had been stabilized and she was resting. Some of the blood that she'd lost was being replaced through an IV and as Sakumo stood in the door way to his mate's room, he swore to himself that no one would ever get near her or their baby again.
Shortly after that, Sakumo was taken in for questioning about the dead man laying in his lawn. Sakumo hadn't been worried though. If anything he seemed eerily calm about the whole situation.
Probably because the autopsy on the dead man was inconclusive.
On one hand they were fairly sure that Sakumo had murdered the man. And on the other they had no real evidence. The guy in the morgue looked like he had been mauled by a bear or something else large with sharp claws and fangs.
It wasn't until a little later on when the interrigator caught the Hatake picking at his teeth with a claw like fingernail that they'd become sure that he'd killed the man. Sakumo had been questioned...painfully. He was quite the stubborn man.
No matter how many teeth were pulled or how many bones were broken, he only laughed and told the person questioning him that they'd have to do better than that if they wanted answers.
He mocked them. Taunted them. Dangled the answers in front of their faces like a carrot then yanked it away when they got too close.
He was a total bastard about the whole mess, not that the third Hokage blamed him much. After all his wife was in the hospital after nearly losing their baby- and he was probably in a highly distressed state of mind.
Things got a little bit out of hand when Sakumo's interrigater overstepped his bounds and pushed too far.
One second Sakumo had been on the floor spitting up blood and the next he'd been on his feet, his hands tightly grasping the interrigators vest. And he slammed the man against the brick wall so hard that he pushed him through it then when the man was having touble breathing due to the blood filling his lungs the Hatake threw him through the two way mirror where the Hokage was standing, and watched dispassionately as he fell to the floor at Sarutobi's feet before saying.
"I'm done playing with you people. I'm going to see my wife."
And that had been it. No one had stopped him or said anything to him as he waltzed right out of Anbu headquarters without so much as an 'please excuse me'. Where was the mild mannered and polite man that everyone had heard of?
A few weeks after that Sarutobi paid the Hatake resedence a visit after doing some in depth work to see what all the carriers of the Hatake bloodline could do and had been more than a little shocked to find out that some Hatakes could shape shift into animals while some had more demonic attributes.
Sakumo it seemed had been a shifter of some kind hiding himself among normal human beings. He had merely somehow managed to hide his fangs and claws and other things from everyone by preying on their ignorance of his clan and their particular talents.
It was a clever plan that had kept Sakumo out of trouble for years.
But the moment that the third Hokage had learned of it, Sakumo's run of luck had ended. Several conversations and heated arguments ending in death threats towards the Hokage, later, Sakumo found himself wearing a shinobi uniform and was given the rank of special jounin and was immidiately put to work.
He kept reminding himself that it was for a good reason, why he was suddenly killing and ruining people at random when he'd tried so hard to lock away his blood lust but after a while he stopped trying to remind himself what he was fighting for (his mate and newborn son) and he simply fought.
But oh when he was home, it was like the switch in his head flipped again and he'd run up to his wife and infant son and take turns hugging and kissing them. Once again the sweet mild mannered man he had been before.
When Kakashi's mother had died, Sakumo had been impossible to remove from his young son's side.
On more than one occasion the Hokage had shown up on Sakumo's door step looking pissed and shouting oaths at the silver haired man as he stood on his front porch with his arms crossed over his chest, looking bored as the Hokage shouted and threatened and tried to bully him until his face had turned blue and he started wheezing for air and grabbing his chest.
Many people watching the public spectical from the road had been worried that the old man third would drop dead from a heart attack or something.
But then Sakumo would finally speak, asking the old man if he was going to drop dead in his yard at which point the Kage would shout that he wasn't going to keel over dead and give Sakumo the satisfaction of doing something unmentionable to his corpse. At which point the Hatake would just grin as if the very idea was somehow funny to him and let the elder continue his rant that usually ended with,
"I'll simply live forever and you can go to hell if you didn't like it!"
After that little outburst the Kage would grab a newly made walking stick that Sakumo had made and use it to make his way back to the road where he'd flop down in the dirt, just outside the yard's gate and cross his arms over his chest and glare at the Hatake like he'd like to smack him with the stick he'd taken.
Sakumo would merely shrug his shoulders and sit down and play with Kakashi, pushing the elder from his mind completely.
However he was happy that Sarutobi was trying to keep his promise to live forever when Kakashi turned seven and there was a particular incident at the school where someone had come up behind his son and grabbed him, startling him so badly that he'd literally ripped a teacher's hand off.
Both Kakashi and Sakumo had been so freaked out by the whole incident that they had retreated into their home for almost three months before Sakumo had come to Sarutobi who had been about to step down as Kage in favor of someone just as strong and brilliant as he was. Sakumo demanded permission to take Kakashi out of the village due to some villagers attacking them in their home.
The harassment got so bad that Sakumo was starting to fear for Kakashi's life. The people saw him as a monster in need of being destroyed and nothing Sakumo did or said seemed to matter so his only course was to take Kakashi somewhere far away and train him to reign in his abilities before it was too late.
It wouldn't occur to him until several months before he died that Kakashi, much like himself was a target of a political assassination.
The killer got Sakumo. But the man had left clues behind for Kakashi so that he could keep himself out of harms way.