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A few minutes earlier…
The sky erupted in blinding brilliance. Everyone held their breath as two figures appeared in the light.
Trunks and Kibito.
"Trunks?!"
"Brother!!"
Bulla and Bulma's voices rang out, eyes wide in shock. Trunks' sudden return stunned them, but something was off.
Bulla squinted, then gasped. His outfit was completely different. Not just his clothes, everything about him had changed. His aura, his presence… his entire energy felt transformed.
This was the result of the Old Kai unlocking Trunks' hidden potential. The others quickly turned their gaze to where Bulla and Bulma were looking. And there, standing tall with calm confidence, was a boy who felt more like a warrior than ever before.
Krillin blinked in disbelief and asked hesitantly, "Trunks…?"
He'd been dying to meet the one powerful enough to make even Super Little Cell call him boss. Trunks gave a small wave and a friendly smile, but there was no time for greetings.
Above them, Trunks could already sense it, Vegeta's aura, blazing like a star. And more than that… he could sense Super Buu's Ki, dark, twisted, and stronger than before.
(No… this isn't right. Majin Buu… he's gotten even stronger. What happened up there?!)
Just then, a soft whimper came from behind as a tiny hand landed on Trunks' shoulder.
"Boss!! Waaah!! You're finally back!!" Super Little Cell burst into tears, sniffling and sobbing like a kid who had been lost for hours.
"Boss! Your dad showed up just in time! If he hadn't, w-we would've been done for!! Look, look at my face! See this?!"
He pointed at his bruises.
"That pink freak just kept slapping me!! He wouldn't stop!! Over and over again!"
Trunks looked at him, face swollen, hair a mess, ki in chaos, and something inside him shifted. He could sense it now.
Five souls… five different energies… fused into one.
(So they really did it… The little Cells fused together, to fight Majin Buu.)
Trunks smiled, a soft, proud expression forming on his face.
"You did well," He said, giving him a thumbs-up. Super Little Cell sniffled, wiping his nose on his arm.
"Boss! Your dad's fighting right now! He's going all out! He even used some new transformation!"
Trunks' eyes widened.
(New transformation?! Wait… don't tell me, he's already reached Super Saiyan 4?! But… how?! I hadn't even told him about the artificial moon yet!)
Just then, he looked up, and there it was. Through the swirling smoke, the faint outline of the artificial moon glowed in the sky.
Vegeta's wild ki was surging from above and as the smoke cleared, the full light of the moon revealed itself. Trunks stared at it, his heart beginning to pound. His pupils narrowed. His breathing quickened. His chest thumped with rising heat and primal energy.
At that moment, nothing else existed, not the battlefield, not the people below, just the moon.
It called to him. It awakened something deep within.
Something ancient.
Something powerful.
An indescribable surge of power coursed through Trunks' entire body. His form began to shift, just like Vegeta's had before, transforming into a Great Ape.
But it was not just any Great Ape…
Thanks to the potential unlocked by the Old Kai, Trunks now had the conditions required for the next step. In an instant, a second towering figure loomed over the battlefield.
Everyone: "?!"
Krillin gasped, "That's… That's the Golden Great Ape!!"
Piccolo narrowed his eyes. "Wait… Is Trunks going to transform into the same form as Vegeta?!"
Bulla stared, overwhelmed with emotion and confusion.
(Dad… and now Brother… They've both awakened a transformation I didn't even know existed…)
As the others looked on in shock, the transformation continued. Trunks' wild energy began to stabilize. His golden fur started to glow with a deeper hue. His primal roars calmed, and then his body shrank rapidly.
In the blink of an eye…
Trunks stood in his humanoid form once again, but it wasn't the same Trunks they knew.
He was shirtless now, his muscular chest radiating energy. Red fur covered his arms and upper torso. Two sharp bangs of black hair framed his face, and his eyes were now outlined in crimson.
He had done it.
Super Saiyan 4, achieved.
Trunks clenched his fists and gave them a few experimental swings. The surge of wild, primal Saiyan power made his blood race.
(This is insane... This form… it's overflowing with raw strength!)
Below, the others could feel it too. Their hearts pounded as the pressure from his aura washed over them. Super Little Cell zipped around excitedly, grinning from ear to ear.
"Boss!! You're so strong now! So cool!!"
Trunks smirked with newfound confidence. But before he could say anything, an ominous force exploded behind him.
BOOM.
The air grew thick, so heavy that even Trunks' breath caught in his throat. He spun around, eyes widening.
It was Super Buu. His ki alone felt like it could crush the sky.
A suffocating silence filled the atmosphere.
Everyone knew it. This was no longer a battle of pride or vengeance; it was survival. Even Trunks, in his newly awakened Super Saiyan 4 state, could feel the difference.
(No... Even now… I can't beat him. Not like this. I might not even be able to land a single clean hit…)
Super Little Cell caught the change in Trunks' expression.
"Boss… then what do we do?" He asked anxiously, circling Trunks like a worried puppy.
The aura around him flickered, those five fused souls still lingering, still swirling.
Then, like a light bulb snapping on, Trunks' eyes lit up.
It was something from his memory. An idea. He placed a hand firmly on Super Little Cell's shoulder.
"There's one way. But I'll need your help, little brothers."
Super Little Cell froze.
"Boss… D-Did you just call me… 'little brother'?"
For the first time in years, Trunks had acknowledged him, not as a weapon, not as a creation, but as family. Before the moment could even sink in, something strange happened.
Super Little Cell's body began to glow… and then, Split apart. Five little Cells stood before him, their separate souls restored. The sight shocked everyone.
Piccolo shouted, "They… they separated?! What in the world?!"
The five little Cells looked around in surprise, then turned to Trunks. "Boss?! What's going on?!"
Trunks' eyes burned with urgency. "No time to explain! Just listen! Unleash all the Saiyan power inside you, and transfer it to me!"
"Now!!"
They didn't hesitate. The five little Cells clasped hands, formed a circle, and began to channel their energy toward Trunks.
Whoosh--! Whoosh--!
Power surged and a dazzling storm of energy erupted around Trunks as his aura began to climb, higher and higher.
He grit his teeth, every muscle straining, but his power kept rising, until…
It surpassed Vegeta's.
(This is it… Now I have a real shot!)
Without another word, Trunks launched himself into the sky, blazing toward Super Buu like a comet.
(End of Chapter)