We will begin from Krillin's POV before Tambourine murders him.
Age 753
"I'll go get your stuff Goku!" Krillin said, "Oh thanks Krillin!" Goku replied, "Better get back before Goku eats all the food." Yamcha joked getting a laugh from everyone "Alright ok I'll be right back" Then Krillin ran off to the stadium away from them. As Krillin finally reached the arena he frowned where is his stuff? Krillin thought then he went into the room where they got changed before the tournament he then saw Goku's power pole and dragon ball in the corner and as Krillin went to pick it up he looked around after sensing an ominous presence then her turned back seeing the green demon in front of him and he never even got to scream before he had his neck snapped like a stick the demon then snatched up the power pole and dragon ball before fleeing then as it left Goku ran in sensing something wrong along with the tournament announcer as Goku gazed upon Krillin's dead body his eye's widening in horror and anger "Krillin!"
"He took the list of fighters that participated," The shuddering tournament announcer said "A green demon-looking thing" Goku stared blanky at his friend's dead body before closing his fist in anger "I'll kill him I swear it!" he grabbed his power pole and grabbed Bulma's dragon radar that he had on hand and prepared to pursue Krillin's murderer however as he went to leave Roshi attempted to reason with him "Goku stop we don't know anything about this creature!" however Goku's rage unyielding and he ignored Roshi's reasoning and left on Nimbus flying away into the distance.
"Um, Roshi what's this?" Oolong asked holding a piece of paper the group had no idea except Roshi who looked horrified "That is the symbol of the demon king Piccolo oh Kami Goku's screwed! we have to stop him now!" "Who is this Demon king?" asked Bulma slightly unnerved by this "This world looked much different when Piccolo was in control large green demons were roaming the planet causing destruction and chaos everywhere," "You know this how?" Oolong asked disbelieving Roshi sighed "I was there" Everyone looked at him in awe "How were they defeated?" Yamcha asked Roshi looked at the ground sadly "Well it all happened at Mutaito's dojo the entire school my fellow warriors thought in the battle however our efforts were in vain as hardly any monsters died while our numbers were whittled down to two Shen and I were those two anyway those hideous beasts prepared mouth blasts and fired them at us ready to finish us off but we concentrated a shield deflecting the attack back at the monsters as they were finished Piccolo himself appeared he was a whole different breed of strength and with a single blast to the ground sent us flying and leveled the dojo along with the surrounding islands with it eventually Master Mutaito stepped in" a hopeful smile went on the groups face as this was where the hero would normally win after all but Roshi saw the expressions and sighed "And he was swiftly defeated" causing that look of fear to come back on their faces "However we took him and nursed him back to health Shen lost faith in him but I did not as Piccolo's rampage continued I took refuge in the mountains where years later Mutaito returned with a rice cooker" "Rice cooker seriously this has got a be a load of bullshit!" Bulma said angrily Roshi glared at her the usually pervy old sage was deadly serious snapping Bulma out of her bad mood. "Anyway he had trained hard learning the evil containment technique and used it to seal Piccolo in a jar but not without sacrificing his own life I founded the turtle school based on his teachings but as civilization rebuilt the heroic sacrifice and Piccolo's rampage across earth was forgotten and they say the age of hero's has just begun" Roshi said the last part bitterly.
Age 753 (On the move)
Goku was still following Krillin's killer with murderous intent blinded by rage he finally caught up with the demon "You I'll kill you!" Goku said angrily Tambourine turned a smirk on his ugly face "Really now I'd like to see you try!" Goku fought with the demon putting up a good fight however he was fatigued from the fight with Tien so he was defeated by the foul beast being flung into a forest and knocked at by the fall left for dead.
As Goku woke up he heard a growl in his stomach after finding a giant fish he cooked it and began to eat before a voice interrupted him "You that's my fish kid!" Goku turned to see a round man wielding a katana Goku scowled "Finders keepers fatty!" the man had a seething expression after hearing that "I'll beat you senseless you tiny brat!" the two had a quick squabble surprising each other at their strength they then stopped realizing it was pointless "So what's your name?" Goku asked "Yarjarobe how about yours," the man said extending his hand "Goku by the way sorry about the fish" Yarjarobe waved his hand dismissively "It was a tiny thing anyway."
Age 753 (Tambourine)
Damn these guys are chumps Tambourine thought all ready 7 down and more to go though that Diana busybody hasn't been seen in a while maybe she died all ready Tambourine chuckled to himself then Piccolo sent him a telepathic message Tambourine Cymbal just got killed by a fat man oh god he's eating him the fuck is wrong with the human race fucking Kami bless his soul oh wait that's me! well part of me but still me! anyway Tambourine go kill him now! then get back here for dinner got it? any way's peace! Tambourine sighed always me isn't it? Tambourine thought annoyed.
"So the kid survived huh?" Tambourine said amused before he heard the word Kamehameha! he turned around getting a face full of laser "damn I'm dead" Tambourine said as the blue beam erased him into nothing Yarjarobe shouted in anger "That was my second breakfast damn it!"
Age 753 (King Piccolo)
"You know blue dwarf no one understands me anymore" Piccolo sighed "I just want to be young again can't you relate blue dwarf?" Emperor Pilaf frowned remembering bitterly of how the past years have been for him first the monkey and his friends then the Red Ribbon army now a fucking demon king "Yes my lord" Pilaf said sadly "I plan to summon the eternal dragon Shenron my pansie of another half Kami's creation but do not fear blue dwarf friend you will share a fifth of my wealth and power when I subjugate this planet to my will!" Pilaf smiled surprised "Why thank you my lord!" then Pilaf was patted on the head "My pleasure blue dwarf friend!" Pilaf sighed again the emperor reduced to a mere pet how insulting then a scowl appeared on Piccolos face "Those damn war waging fiends murdered my baby boys!" the king got up in anger "Alright their fucking dead!"
Age 753 (King Piccolo vs Goku)
"Hmmph for the one who defeated my son's your kind of pathetic!" Goku gritted his teeth in anger "llab eriF" then a large fire ball was summoned before being frown a Piccolo the demon winced surprised that the fire was so potent (Namekians are suspectable to high heat) 'Alright stop speaking gibberish small child!" before nailing Goku in the heat knocking him out the green fiend went to check his heart rate "Dead as can be his soul's in otherworld now" then he snatched the dragon ball and moved on to find the rest then Yarjarobe (probably interested in a meal) went to check Goku's heart beat but it started beating again and the warrior lives (Much to the hungry man's disappointment).
"Nice try old man!" Piccolo said evilly Roshi coughed in amusement "That's rich coming from you" Piccolo frowned annoyed "Not for long it won't" he then stabbed Roshi in the chest then turned and said "Come fourth the majestic almighty unrivalled incredible eternal dragon Shenron!" the sky darkened and a gigantic dragon appeared Chiaotzu sighed "You know Wake up dumb dragon works to right?" Piccolo turned in anger "Oh not you don't your not going to ruin this for me!" then he killed Chiaotzu Shenron frowned "Your staining my scales bro make your wish already," Piccolo turned with glee "Eternal Dragon Shenron grant me eternal youth!" Shenron frowned again "Wouldn't immortality be better?" "Oh crap your right I change my mind!" Piccolo replied "Nuh uh no take backs!" "Kami why is your dragon such a bitch!" then Piccolo looked at himself proudly "Oh well at least I can rule the world looking good!" then he looked at Shenron who went to disappear "As for you there's one my thing you can do for me " he then shot a mouth blast at the dragon "The fuck?" Shenron said death staring Piccolo before being erased to nothing.
"Yarjarobe help me up the tower we need sensu beans" Goku said weakly Yarjarobe frowned "Ok but you owe me later" after this the duo hiked up the tower.
Age 753 (White house)
"Alright Pette your times up I already turned king furry into a fur suit now I'll turn you into a skinsuit!" he then stabbed the U.S president Pette Ross in the chest on live television he then turned around "People of earth I'm have wiped out a vast majority of your world leader wanna no why?" he waited dramatically for a bit "Well I don't care if you do because I'm now the ruler of this world not one of these suit wearing propaganda spreading pansies!" he then raised two fingers nuking the white house and everyone in it before walking out then being confronted by Super Boy "You monster what have you done!" Super boy said enraged Piccolo chuckled "I'm helping this world kid there will be no more wars no more suffering because I conquered it!" he then turned to him "Afterall what are you going to do about it? the Kryptonian looked at him eye's glowing red before two heated lasers hit the demon king head on however much to everyone's terror he shrugged them off with ease "That it huh come on do better than that!" Piccolo then charged smacking Clark in the head sending him spinning then young hero charged down engaging the demon in mortal combat however the demon's newfound youth gave him an overwhelming edge as he smacked the Kryptonian upside the head "That it huh? fat shame," before knocking him unconscious.
Age 753 (With Tien)
Damn this technique is hard Tien thought but it'll be worth it our brute strength means nothing to this guy I must learn the evil containment wave for the sake of everyone!
Age 753 (With Goku and Yarjarobe)
"Finally here remember you owe me Goku!" Goku sighed "Ok I promise" then Goku turned to Korrin "I need to train now!" Korrin frowned apprehensively "I'm afraid you surpassed me in strength my teachings are hardly noteworthy as you are now but the ultra divine water that may be our only hope." "Where do I find it?" Goku asked after eating a Sensu bean "In an icy caved guarded by many traps tread with caution young one" Goku nodded "Thanks Korrin" before going on his way to find the worlds last hope.
"Hehe look at that one he just stabbed that other buffoon in the back these humans are truly despicable I remove laws and they turned to savages without a punishment most would be as evil as this" his son drum frowned "I understand banning laws and disbanding law enforcement but was banning the words peace and justice necessary?" "Drum don't say that for Kami's sake I can't show favoritism! anyway lets do a lottery shall we" Piccolo said broadcasting it to live television "Alright numbers 1-100 represents the remaining cities left in the world alright one is Gotham two is Metropolis three is star city and four... ok you know what this takes to long Drum roll the number!" Drum rolled a number as he said it "Alrighty then number 56 West city your our lucky winner as you get to be obliterated by yours's truly!" Bulma meanwhile watched this utterly terrified for her cities sake.
Tien was slowly making his way to seal Piccolo whilst Goku rode Nimbus to battle preparing for his rematch though Tien reached king castle first (Yeah its called that) and prepared apprehensively however another figure appeared suddenly a red clad hero moving at high speeds he nodded to Tien "Hiya names flash what's yours?" he said smiling Tien frowned "Tien" Flash grinned "Nice name Tien!" Tien looked confused "Um thanks?" then the two turn at the sound of footsteps "Oh more weaklings huh? Drum kill them!" Drum smiled "With pleasure and leaped at the duo the two dodged but as they thought him Tien and Barry were tagged multiple times dealing severe damage thanks to his strength Tien jumped away charging the containment wave EVIL CONTAINMENT WAVE! Tien shouted launching the rice cooker at him however the cooker was cracked cracking a smile on Piccolos face (Lol) "Oh crap" the red blur said nervous Tien straightened up "Well we may as well keep fighting to the bitter end" as they prepared to fight a new challenger appeared clad in orange and very small it was Goku Piccolo sighed "You again Drum kill him" but as he tried Goku hit him in the face knocking his eye's out then killing him Tien and Barry looked in awe at his feat "He just one shot him!" the flash said Tien nodded in agreement "Alright I'll make this quick" Piccolo smiled evilly and charged at him throwing a chop which Goku easily parried "The fuck" Piccolo said surprised before the two exchanged blow for blow before Goku threw him into a building then Piccolo opened up with energy blasts attempting to pulverize him but each missed their mark then Piccolo flew up before diving down and saying MAKOSEN! Goku dodges and hits him again then jumps back "I'll make you pay for all you've done!" then charged at Piccolo at high speed hitting him with a gut punch sending him towards Piano (His forth son) killing him the demon king got up enraged and charged back throwing a flurry of punches at the Saiyan but he recovered quickly jumping back "Alright kid that's it I'm no longer gonna play nice taste this my full power!" and hits Goku causing a crater in the ground as the bystanders thought he died they heard a voice Kame... Hame... HA! hitting Piccolo the two then continued their duel exchanging blows again before Piccolo jumped back launching eye beams burning Goku's knee after then Piccolo enraged increased his size and continued attacking and then Piccolo and Goku shot finger blasts at each other then Piccolo charged an attack and said Explosive Demon wave! hitting him but Goku got back up and attacked again as Piccolo is put on the ropes he charged towards Tien and Barry holding their heads in his hands threatening to crush them "Stop I'll do what you want just leave them Piccolo!" Goku said scared then Piccolo said "Don't move before propelling rocks at Goku going high speeds breaking his arm and leg "Now your screwed kid!" Piccolo cackled but then looked in fear as Goku charged an attack Kamehameha! hitting him then Goku charged swinging one hand up as a great ape image surrounded him and punched right through Piccolo's chest surprising everyone as Goku is carried by his friends and they sob in victory Piccolo vomited up an egg his reincarnation Piccolo jr "Avenge me son defeat these earthlings once and for all!" before exploding in a red hot fireball.
Next chapter will go over 23rd world tournament and start Saiyan saga
Also tell me the chapter length you guys want damn it and constructive criticism not insults
