6Screen 1 – Peaceful Times
Six years have passed. Goku is now 24, Chi-Chi is 24, and Sonic is 19. Sonic lives with Goku's family, treated almost like an older brother in the household. Young Gohan even calls him "Uncle Sonic", and they often play together. Sonic teaches Gohan speed games while Goku balances training and family life.
One day, Goku takes Gohan to meet Master Roshi, like in the original story. Sonic tags along at first but gets distracted by a food stand selling hot dogs and races off for a quick snack.
Screen 2 – Raditz Arrives
Meanwhile, a Saiyan space pod crashes in a remote forest near Goku's home. Raditz, Goku's older brother, steps out and senses powerful energy. He soon locates Goku at Kame House, explains Goku's Saiyan heritage, and kidnaps Gohan just like in canon.
But Sonic, who was zipping through the forest, suddenly sees Raditz's ship take off. Shocked, Sonic realizes something's wrong. He tries to chase at full speed but carelessly reveals himself. Raditz notices his presence but doesn't take him seriously, calling him just another "weak Earthling."
Screen 3 – Sonic Awakens
Angered that Raditz took Gohan, Sonic rushes to warn Master Roshi, Goku, and Piccolo. They all learn the truth about Goku's Saiyan blood and Raditz's plan.
Sonic refuses to sit back. He races ahead of Goku and Piccolo and intercepts Raditz before their battle begins. He unleashes a burst of ki-infused speed attacks, surprising Raditz. But Raditz mocks him, laughing:
> "You're fast… but you're still just a human-level weakling!"
That insult triggers something inside Sonic. For the first time, his anger pushes him into Dark Sonic form. His aura turns dark, his eyes glow, and his attacks gain raw destructive energy. He fires blasts of chaos energy and lands a devastating Spin Dash, cracking Raditz's armor and even breaking some of his bones.
Raditz, now injured and furious, powers up further. Dark Sonic's energy fades after the outburst, leaving him weak. Before Raditz can finish him off, Goku and Piccolo arrive.
Screen 4 – The Canonical Battle
From there, the fight continues as in the original story. Goku and Piccolo team up against Raditz. Goku sacrifices himself to hold his brother in place, and Piccolo's Special Beam Cannon pierces them both, killing Goku and Raditz.
Sonic wakes up afterward, exhausted. He learns what happened and is shaken by Goku's death. When Piccolo picks up Gohan, Sonic confronts him:
> Sonic: "Where are you taking Gohan?!"
Piccolo: "That's none of your business. The boy has potential… I'll train him myself."
Sonic: "If you're training him, then I'm training him too. He's like family to me."
Piccolo: (smirks) "Fine. We'll see if you can keep up."
And so, for the first time, Sonic and Piccolo agree to train Gohan together.
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