After the intense battle with Black Frieza, the team took a much-needed respite, regrouping and recuperating from their grueling fight. The forest, though scarred, was slowly returning to its former tranquility. Goten, Rias, Broly, and the rest of their team remained on high alert, knowing that the threat of Black Frieza was far from over.

However, their moment of respite was cut short when the sky darkened ominously, and the rift in space-time reappeared. The air crackled with dark energy as Black Frieza emerged once more, his presence even more menacing than before.

Frieza's form was now surrounded by an aura of dark energy, and his eyes gleamed with malice. "You thought you could drive me away so easily? I underestimated you, but now I've come back stronger. And this time, I will crush you all!"

Goten, Rias, and Broly immediately readied themselves, their senses alert to the renewed danger. "He's back," Goten said, his voice grim. "And he's even more powerful than before."

As the team prepared for battle, a familiar energy signature approached rapidly from the distance. Goku and Vegeta arrived on the scene, their auras blazing with incredible power.

"We sensed a tremendous energy spike," Goku said, landing beside Goten and Broly. "We came as soon as we could."

Vegeta followed closely behind, his expression serious. "We'll need to combine our strength to take down Frieza. He's not the same as before."

Rias, seeing the arrival of Goku and Vegeta, felt a surge of hope. "We're glad you're here. Frieza has returned, and he's more powerful than ever."

Black Frieza's laughter echoed through the forest. "So, the Saiyan princes have arrived. How amusing. Let's see if your combined strength can stand up to me."

Goku and Vegeta immediately powered up to Super Saiyan Blue, their energy radiating with intense light. The team quickly coordinated their strategy. Goten, Broly, Goku, and Vegeta prepared to face Frieza together.

The battle commenced with an explosive clash. Goku and Vegeta's Super Saiyan Blue forms matched Frieza's dark energy, while Goten and Broly attacked from different angles. The combined might of the Saiyan warriors was formidable, but Black Frieza's power was overwhelming.

Frieza unleashed a torrent of dark energy attacks, forcing the team to defend and counter with all their strength. The forest once again became a battleground, with energy blasts and shockwaves reverberating through the air.

Goten and Broly worked in tandem, using their combined attacks to try and push Frieza back. Goku and Vegeta launched powerful energy blasts and engaged Frieza in close combat, their blows connecting with devastating force.

Despite their best efforts, Frieza's dark energy continued to overpower them. The battle was fierce and unrelenting, with each side pushing their limits. Rias and the rest of the team did their best to support the Saiyan warriors, casting protective spells and providing energy boosts.

In the heat of the battle, Frieza targeted Rias with a massive energy beam. Goten, noticing the attack, acted instinctively. "Rias, look out!"

Goten dove in front of Rias, taking the full brunt of Frieza's energy beam. The impact was immense, and Goten was sent crashing to the ground, his energy rapidly depleting. Rias rushed to his side, her eyes wide with fear and concern.

"Goten!" Rias cried out, her voice filled with anguish.

Goten, barely conscious, looked up at Rias with a faint smile. "I… I had to protect you. The crystal… it's our only chance."

Rias's eyes filled with tears as she tried to tend to Goten's wounds. "No, you can't… you can't leave us!"

Goku, witnessing Goten's sacrifice, was momentarily taken aback but quickly refocused on the battle. "We have to finish this! For Goten and for the safety of our worlds!"

Vegeta, driven by a newfound resolve, powered up to his maximum and launched a massive Final Flash, combined with Goku's Kamehameha wave. The two attacks merged into a colossal beam of energy, surging toward Black Frieza.

Frieza, exhausted and enraged, tried to counter with his own dark energy, but the sheer force of Goku and Vegeta's combined attack was overwhelming. The beam engulfed Frieza, and the explosion that followed was blinding.

When the light faded, Black Frieza was nowhere to be seen. The dark rift closed behind him, leaving the forest in a state of relative calm. Goku, Vegeta, and the team gathered around Goten, who lay on the ground, barely clinging to life.

Rias, holding Goten's hand, wept silently. "You were so brave… you saved us all."

Goten's eyes were filled with a mixture of pain and satisfaction. "The crystal… protect it… for all of us…"

Goten's energy finally waned, and he closed his eyes, his sacrifice having ensured the safety of the crystal and the protection of his friends. Rias, overcome with grief, clung to his lifeless form.

Goku and Vegeta approached, their expressions somber. "Goten's bravery will not be forgotten," Goku said quietly. "He gave everything for the cause."

Vegeta nodded in agreement. "We'll honor his sacrifice by ensuring that the threat is fully eradicated and the crystal is safeguarded."

As the team mourned their fallen comrade, they resolved to continue their quest with renewed determination. The Luminous Crystal, now within their reach, was a symbol of hope and a reminder of the sacrifices made along the way.

With Goten's legacy guiding them, the team pressed on, knowing that their mission was far from over. They would honor his memory by protecting their worlds and striving for the peace he had fought so valiantly to preserve.

The story of Goten's sacrifice became a beacon of courage and hope, a testament to the strength of their alliance and the enduring spirit of those who fought for a brighter future.