Imagine for a moment

 A man so engrossed in all things science decides to use his own son as an experiment

 The man branded a failure in his clan for his lack of martial talent decided to increase his potential through science.

 After years of research he found the formula but alas his cowardice overcame him and he couldn't bear to test it on himself....so he took his son.

 The formula meant to expand the dantain and increase one's potential was injected into the boy...he screamed and heated up and his muscles stretched and bulged and retracted then after what felt like an eternity for the boy....the pain disappeared and his aura was exuding with enough pressure to be tangible.

 The power was potent indeed however as the boy took one step...the scientist ,his father dismayed as the boy exploded...his guts everywhere....the formula was a failure. “Back to the drawing board I guess”.

 Now the scientist had to take off his lab coat once again and go stalk a delicate woman who'd be easy prey for his “martial sword”.The reason for this was the test subjects had to be from his own family....but every other member of his clan and his family especially was a monster capable of destroying a country in a single night....so as the weakest member of his clan and family he had no choice but to create his own guinea pigs through reproduction

Even as the weakest member of his clan...Sho tucker was still vastly superior to the average human in every sense but his greed for power clouded his judgement...in his mind it wasn't enough to be stronger than everyone else...he has to be the strongest and he had to prove it .

 After many more years of failure ..Sho finally did it....the serum worked on his latest offspring (the 18th child he had fathered )but before he could celebrate his breakthrough... his family stormed into the lab

 His clansman had become aware of his actions long back but had never paid the weakling any attention but the news of his newfound success had literally found it's way to them in mere seconds.. (nothing could be kept secret from this clan)....as they burst into his lab they were too late....he injected himself with a similar serum....his dantain becoming oversaturated in an instant ,Sho tucker had finally reached the same level as the man he viewed as a true monster even among the monsters of his clan ..he had gained energy similar to that of the clan leader....with a wave of his hand everyone who had entered the room got thrown several kilometres away from the vicinity

 After realising how dangerous Sho has become.....7 of the clansman available realised they had no chance against this monster and decided to use a forbidden technique which required them to commit senpuku in a specific sequence in order to create a teleportion zone and they summon the clanhead.....Sho looked at them and immediately got terrified as he realised what they were doing "curses...I shouldn't have thrown them that far away now I can't stop them" he then grabbes the boy, his son who had been his first successful guinea pig and reluctantly decided to absorbs all the chi the boy had(a technique that would kill most chi users ) leaving him in a near death state....he then removed his lab coat and wore his martial clan uniform ready for combat. ....Lightning sparks and the clan elder walks through the teleportation circle....Sho's eyes widen as he realises his brother was the man who appeared....now two brothers stand before each other.

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 Sho is surprised to see that the clan head is actually his brother meaning the monstrous geezer has finally died"has it been that long since I went home?"....he then relaxes thinking this will be much better since it's just his brother...."ah brother....I who you looked down upon for so many years has finally surpassed you... tremble before my powe...." Before he could finish his sentence his gets uppercut from Shinjuku japan to new york America in a single hit.

 Flabaghasted by this turn of events Sho gets his senses back and realises he landed on and destroyed the statue of liberty....he feels his jaw and most of his teeth are broken and before he can even react he looks and sees his brother wielding the hand of the statue of liberty like a ridiculously big baseball bat....he tries to react but gets crushed immediately... feeling disoriented he laughs realising mere concrete won't be enough to kill him and before he does anything another monstrous punch connects to his face but this time before he gets thrown away... he gets pulled by the collar and his face lands on an elbow....he coughs blood and looks at his brother with distain "w..why couldn't you all just accept meee!!!" He tries to create an energy blast with his hand but his brother forcibly closes his hand for him and headbutts him in the face...."this whole t..t...time ...y...y..you never even said a word to me...y..you never even acknowledged my existence!!!".....his brother looks at him with sadness in his eyes and says "When we realised you weren't cursed like the rest of us we decided to shut you out of our lives so you could have a normal life....it pains me to have to end you Sho"...with that he draws his blade which exudes enough aura to kill a normal human from just looking at it....Sho tucker looks grimly at it realising this is it then laughs and says "S...So af....After all these years your first words to me are on the day you kill me huh.... y...you must be happy to finally be getting rid of me huh?" His brother looks at him and sighs....then he pulls Sho close and receives him with his sword as it pierces Sho's heart...Sho grits his teeth and looks his brother in the eyes...."The clan head huh?..I see why" and Sho's brother finally says...."Father died disappointed in you....in the end I still couldn't hate you..rest now Sho Tucker"

After the short battle (ass whooping) the clan head goes into the lab and picks up the young boy....a spitting image of Sho...he then sighs and says "let's give your story a happier ending" then he walks into the portal with the boy in his hands.