A/N: This is my 3rd fanfic. Please enjoy. I do not own Kenichi : History's Strongest Disciple, I only own this story my character and this bag of fig newtons. Now let's get to the story. Nathan's Street Fist style incorporates brawling, some throws he remembers from his childhood, and even wrestling maneuvers combined all into one package of victory. I hope you enjoy my Kenichi: History's Strongest Disciple and no I don't own it but if I did, Kenichi and Miu would be together at least secretly by now.

When a Lost Beast finds peace.

Ch. 1: When Fighting becomes nature.

~flashback, 8 years prior~

A young Nathan Balsa stood there in a school parking lot looking up at his American mother and Japanese father as they were in to him anyway, an unfamiliar but much superior section of town then they lived in, his eyes staring briefly at the giant stone building struggling to make out the name. Despite rumors of a Superhero (Hayato) being in the area his parents were still distant after meeting up with the giant beard guy though why Nathan had no idea as he felt his mother's tears leak onto his head as she hugged him briefly her blonde hair swaying in the wind as her father had his back facing him, his hair itching from having been dyed black, to help him pass while he was still young enough to not stand out amongst his classmates.

The Anti-foreigner discrimination had grown so severe in that part of town that Hayato and Akisame intervened, driving off the violent protestors while Hayato got them to their vehicle which he had "moved" beforehand. He sent the Balsa family away to a more tolerant, accepting neighborhood or so the Invincible Superman thought. In the car they drove past Ryozanpaku and stopped at the nearest school, a high school, and got the boy out, pulling out a pin with a name tag on it that read Koga Saejima, as after his mother's tearful cries, the newly renamed Koga had his name drilled into his head the entire way there until Nathan knew it by heart and said it on cue. When they headed to the car, Nathan tried to follow though stopped when they told him to stay.

His parents said they would be back soon once it was safe for them, leaving Nathan or as they had renamed him "Koga" leaving him with 2 days worth of food and drinks, a blanket and a bag of clothes. It was Golden week so no students or faculty would show up, as a devious smile was on each of their faces after getting in the car, his mother counting the money while they drove away, Nathan, not knowing any better waited for days, his heart filling with hope and then crushing with each passing vehicle. 3 days after his food & drink ran out, Hayato Furinji came by on a walk and found the boy passed out from hunger, his body stinking to high heaven due to lack of bathing and other bathroom issues, his face stained wet, weakly calling out daddy.

Hayato immediately thought of how he had found Miu's mother, and his granddaughter what she meant to him. Hayato's Ki began to skyrocket and being to spiral out of control, causing the ground beneath him to shatter with each step as The Invincible Superman's heart begun filling with a mixture of rage and sadness, saddened for this child that had been castaway just for his heritage, and rage over the fact his parents took the money Sakaki, Kensei and Shigure had handed over from their latest bodyguard/assassin job to help them move only for them to leave the boy on the side of the road like a broken TV.

Hayato, while carrying him into Ryozanpaku as fast as he could go without the wind velocity harming the child, landed inside the grounds with an explosive thud, drawing the other masters that were there, so he could get food and water, a bath and clean clothes and more importantly kindness he had been so denied. Even the usually ill-tempered Sakaki Shio, softened as he carefully washed the kid, while Kensei tended to his medicine along with Akisame and Shigure and Miu tended to his clothes. In each of the minds of the Masters they were all picturing beating the daylights out of this boy's father.

The young Miu rubbed the boy's head not understanding why his mom and dad would do this to him. She aided as much as she could help over the course of days, looking in on him, as did everyone, before heading outside to practice her Martial arts as Akisame looked at Nathan, the group deciding as a whole to reject the new name his parents slapped on him. Akisame smiled, seeing how much healthier the boy looked in the days since he came. "What will you do? You certainly cannot consider telling the boy his parents have forsaken him. And despite the "motivation" they have, Kensei Ma's contacts or Sakaki's government connections or Shigure's underworld ties were able to find them. They seem to have truly vanished."

Hayato stroked his beard troubled as he heard Akisame. "They must have been planning it for a while. Still to leave him..." Koga had wandered outside and was imitating Miu, picking up on her Martial arts Kata, rather lacking in speed but where speed was lacking power was more than present, much like a Tiger, not the fastest of cats but easily the strongest. Other signs of Nathan's parents' child neglect became apparent when they realized his difficulty reading and even writing his name in kanji, knowing there was no way they could put him in school without adding to his misery due to being humiliated, picked on and laughed at, however Akisame's eyes took on that familiar glow as he devised a rather well detailed set of notebooks, and began tutoring him in math while Kensei did reading in addition to Hayato tutoring him in writing and soon, thanks to them working his mind as hard as they would their future disciple's body, he caught up and in some cases surpassed Miu's current grade level, getting enrolled in school and he started excelling quite fast. That is until just before his 14th birthday, which is when he ran away from home.

~present day~

Their hands held each other as this secret relationship, near an alleyway trying to avoid being detected by his mentors. "I love you so much Miu, For you I'd take on your Grandpa just to be with you." Kenichi's hands stroked Miu's hair as a tear of joy trickled down her cheek. "I love you too Kenichi, I have for the longest time." Their arms soon were around one another, kissing passionately yet almost chastely due to their somewhat shy personalities. However, Kenichi's hand started to push its way up her shirt. A young police detective wearing a red jacket named Tanimura passed by shaking his head once he caught sight of Sakaki.

Then just as their minds begin to sink into the bliss, that was when a loud knock got their attention interrupting the mood as their eyes widened in fear. "Kenichi, the Old man is going to obliterate you." An evil smirk was on his face as he knew things had been different between them as had the rest of the masters since Fortuna's tournament and even more so in the Junazard incident.

Nathan the Tiger as the pit fight announcer called him stood there, being booed to the point of even having trash thrown at him. His full back was covered by a Tiger head tattoo, which he had gotten in honor of the man who trained him to get the most out of his natural power, Taiga Saejima, the ink shining as if it itself was beaming with pride, as clearly it had clearly been well maintained. In this match, he would be taking on the current Champion, The Boss(the man Akisame used to give a Jujitsu demonstration to). Now at 17, Nathan stood at 6'4 250 lbs, yet his opponent for this "even" Underground fight, was over 7 feet tall wearing a ridiculous multi-colored mask and a white tuxedo, removing his jacket and watch .

The Pit Champion suddenly swung, catching the unprepared Nathan off guard, and then the official said "Fight!" clearly in the pocket of Boss as nearly everyone present or watching online bet on Boss, except for 2, one a legendary Yakuza named Goro Majima and the other a group of 9, calling themselves Yami, which bet 2 million each on Nathan, as the Boss stared up at the betting screen in disbelief, turning his back to Nathan. In the background a former Yakuza wearing an all grey suit with a red shirt underneath, known in the underworld as the Dragon of Dojima, had a cell phone up to his head. "Sakaki…that kid you asked me to keep an eye out for years ago, I've found him." Kazuma Kiryu told him the address. "This makes us even for you protecting the Orphanage during the issue with the Tojo Clan years ago."

Nathan repaid the man's cheap shot with a palm thrust to the middle of the back, and then a straight right to the back of the head, before he jumped back into nearby stone pillar, gravity showing a bit of mercy allowing him to line up perfectly on target before launching at Boss just as he turned driving all of his near 300 lb mass into man's body with a devastating technique he called the Tora Hansha, his right forearm still resting in the side of the man's head, multiple broken bones and missing teeth, while his left arm went into the man's stomach, with a full force palm thrust.

Miraculously the man was still conscious so Nathan intending to finish the fight proceeded to grab hold of the man lifting him up almost onto his shoulders before throwing him into the concrete pillar and once gravity had put him in perfect position, Nathan drove a front kick square into the man's spine causing blood to gush out, knocking him out, his Street Fist style claiming another foe.

The fight ring operator felt his associates as they glared watching the money roll from all of their accounts, into 2, the lion's share going to YAMI and the second being Nathan's account which the man who loaned him money to survive on his own, Shun Akiyama set up for him so when he won he would not be getting cheated. The illegal fight lovers stared at Nathan whispering to their cohorts. Meanwhile as fate would have it, Miu, Kenichi, and Sakaki were walking by the building, Miu seeing the large mismatch fight. "Oh my god…Kenichi, Master Shio we've gotta help him."

Nathan staggered after getting caught in the ribs with a lead pipe from behind, dropping him to a knee. However before they could continue, The hired thugs saw several of their men go flying as Sakaki approached, looking at Nathan who he recognized on the spot, his eyes scanning over about 15 men who were out before he arrived. "Not bad, Kiryu... Hey Nathan, you owe Miu a thank you for noticing you. Miu come take care of this guy, me and Kenichi can take the rest of them." The Master and Disciple went to work taking out the thugs and their bosses though 2 men approached Miu from behind, one wielding a crowbar the other a bat. "Oh check out her body…we will have fun with her."

Suddenly as the guy wielding the bat stepped forward, Miu rose, kicking clear through the poorly made sports tool, her foot going into the man's chest, but while she was busy with him, his partner made his move only for Nathan to rise up wrapping his arms around the man's waist. Nathan used a combination of adrenaline, desperation to amplify his Dou ki powered strength to lift the scrawny aspiring rapist up and over tossing him onto his face with a release German Suplex, throwing the man face first onto the concrete, before collapsing blood rushing from his mouth due to the injuries after the beating he had taken in this heavily one-sided mismatch, though before he passed out, he thought of the man who saved his neck before Master Sakaki, Miu and her boyfriend arrived. Sakaki patted Kenichi on the back as he carried Nathan while Miu walked ahead. "If you and Miu are going to do that, you need protection, Kid."

Soon Sakaki was carrying 2 teens, as Kenichi's mind overloaded at the idea of him and Miu, a thin trail of blood running down his scarlet face, Sakaki unable to contain his laugh about funny it was that for how in love Kenichi and Miu were they were still just shy and naive they always had been. Sakaki easily matched Miu's pace staring ahead, balancing Nathan on his shoulder long enough to push the door to the dojo, carrying them onto the grounds as Akisame made his way out while Miu fetched the others. "Sakaki isn't that...- Yeah it's him alright,"

Shigure poked the still KO'd Kenichi, as she looked up at her Karate associate. "What..happened?" Sakaki smirked glancing at Miu handing Nathan to Akisame so he could head in for examinations. "Kenichi got attacked by the barrier of manhood." Sakaki fetched a beer chopping the top off letting Kenichi get taken down by Miu as Kensei spoke up now realizing what Sakaki meant . "Be gentle with him Miu when alone, sound carries very far in these walls." Miu's spine stiffened up straight causing her to flash crimson, before dashing off to Kenichi's room, her heart pounding with a mix of embarrassment, from what Kensei said and fear of her Grandpa finding out about her and Kenichi.

To Be Continued.