Earth - End of the war
"You heard me, soldier? They gave us the retreat! Run towards the galaxy warp as fast as you can!" A Homeworld gem, that was one of the many Jasper's, warned while continuing fighting the rebels.
They were currently giving the last wave of attack on the rebellion army before needing to run away.
"But what about Big Brother!? He's still fighting against all of them!" The other gem responded while clashing with another rebel gem, giving only a slight glance she saw him parrying all attacks while fighting back, despite him having multiple wounds and no left hand to wield his weapon effectively.
"He's still there? The diamonds ordered him long ago to stop fighting!" The Jasper yelled while poofing two gem rebels and smashing their gems. On the distance, the galaxy warp was activated and multiple Homeworld gems were leaving the planet.
"What do we do? We can't leave him behind! We can't afford to lose him too!" The Homeworld gem replied back while poofing the gem she was fighting and stabbing it with her spear.
"Run towards the warp! I'll make sure he'll be safe!" She responded back while charging herself towards the wave of enemies. He axe chopping down her enemies, rebel gems and humans alike.
The Homeworld gem, not having any power to fight back any longer, ran as fast as she could towards the pad.
In the center of the battlefield, a lone gem was fighting four rebels on his own. He was gravely wounded, his left hand had been sliced off, his fatigue catching up to him, yet his will to fight never seemed to diminish.
His weapon would twirl on his right hand and stop any attack within a blink of an eye, his movements fluid and his power above the average gem. This was the gem that earned the title 'Big Brother', for his achievements and how all gems were treated by him.
"Why hasn't he returned to his gem yet!?" One of the rebels yelled as he tried to attack the black gem, but effectively was parried.
"He isn't called Big Brother for nothing, you know!" The other rebel answered while the four of them attacked him with everything they had.
With his sharp eyes, the black gem saw the opening he was looking for and with a swift movement he struck them with a wide arc, catching all four of them in one fell swoop, poofing them in the process.
But instead of crushing their gems, he did nothing. He simply directed his attention towards the other wave of the rebels army, as they were closing dangerously fast on him.
"Keep fighting him! He can't keep this up forever!" One of the rebels gave incentive to the others, making their will to bring down the black gem down.
He in turn simply gritted his teeth and keep a steady grip on his pole. He wouldn't fall and he wouldn't shatter. He sworn himself that.
"Graaah! You weaklings! Outta my way!" The Jasper from before cut through them and shattered all that were in her way, a few humans were caught in the process as well.
He huffed in the air, why was this Jasper here? She parried an attack from a gem before clashing with another one. Her axe was stained with both dry and fresh blood from the humans. His right arm and left leg had been pierced by swords and such, making his movements dwindle.
"What are you still doing here, Big Brother! They called out to come back now! They sounded the retreat!" She said while banishing another set of gems.
He knew about the retreat, but he wanted to stay as long as he could to make sure any gem from Homeworld would return safely.
"We don't have time! The general got an order from the diamonds to retreat! They want you out of here!" She repeated again while he kept parrying the rebels attacks, despite a few swords had passed through his right arm and left leg.
He tapped her shoulder with the blunt side of his weapon and pointed towards the galaxy warp to escape.
"I know what you're trying to say, but I'm not going anywhere unless you run away to the warp with me!" She responded back while executing another gem and crushing her gem.
He didn't liked this. He was here fighting, sacrificing himself for them to escape, yet this Jasper still kept staying with him. He wasn't anything special, sure he got a title, but any gem could get it!
He pointed once more, this action was more forced than the one before, like he was ordering her.
"Even if you force me, I'll just come back again and make sure you'll return with me!" She once again parried, while he finished the job with two gems and still stunned one, giving her the chance to poof two gems with one large arc.
In the distance, he could spot Rose's shield rising and growing in size. What was she thinking?
Then a large sound was erupting from the sky itself. Both gems looked at the sky to see that a growing light was starting to increase and blind them. Out of reflex, the black gem covered his eyes with his weapon. That was his one and only mistake in the battlefield as a sword passed through his chest.
"Big Brother!" The Jasper yelled as he looked at the blade sticking from his chest. He knew that he couldn't stay in his physical form any longer.
"Why did... they..." His own voice exhilarated pain that was too much and yet with a tint of anger. He then succumbed to his injuries and retracted back into his gem, lying in the floor that was once a battlefield. His weapon stabbed in the ground as a relic of the past.
Vacuum of space - Spaceship
As the remaining leaders of the diamond authority, they had to call out a retreat. They were low in soldiers and firepower to defeat the rebellion. They waited as long as they could before unleashing a forbidden power.
"We had no choice." Blue Diamond said while in the presence of the other two.
"At least the cluster had been successfully integrated. All we have to do now, is wait until the impending doom of Earth." Yellow Diamond informed while she analyzed the losses of their military force.
Meanwhile, White Diamond was looking through the ships and the transported gems that escaped the clutches of the terrible weapon they unleashed.
"General! Where is Big Brother? Why isn't he with any of you?" Her voice boomed with authority, yet the gem in front of her could only give her a shaky response.
"H-He d-didn't make it, my Diamond!"
"He what!?" Yellow Diamond stood up from her seat looking at the small gem. "Where were you while we specifically gave you the order to bring him back? With his injuries from the last battle he's buried himself too deep to grant him a crack in his gem!"
"M-my apologies, my diamond! I was certain the Jasper that I sent to retrieve him hadn't returned because they either already were teleported from the galaxy warp or any spaceship!"
"Useless! All of you!" With anger on her expression, the other gems trembled at the fury that one of the remaining diamonds was expelling.
"What do you think we should make of this, White Diamond?" Blue Diamond asked as she wasn't sure on how to feel for the lost of the gem they knew for so long.
"There is the possibility that he was forced to return to his gem after all those injuries." She said with some hope that the black gem was still alive and well in his gem.
"There's also the possibility that he got corrupted by us. But until we are certain, I'll label him as MIA." Yellow Diamond said while recording, with some faltering on her text.
"I'll personally inform his Pearl and any gems that he housed to teach." Blue Diamond responded, keeping herself straight.
"Why couldn't you have been like the other support Onyx? Why choose to fight? Why be different to what you were supposed to be?" White Diamond mumbled to herself as she knew the reason from him, yet it puzzled her to why he would go so far for them.
"You fought, because that was the only thing you knew wasn't it, Big Brother?" She thought to herself as they returned back to Homeworld. She stared at the window that faced Earth, looking at it as to say goodbye to a very important gem.
Onyx type gems are healers, while not being able to heal cracks on gems, they specialize on healing the wounds that any gem carry with them and absorb any kind of dark energy they emit.
Dark energy involve of raw negative emotions that other gems or organic sentient matter carry. They convert this dark energy into their signature healing warmth to heal, though if they heal too much the effects could harm their body.
The higher the effort, the more it'll affect their physical form before reaching their gem and unfortunately giving them a sad end.
Aftermath - A few decades later
The rest of the crystal gems were scouting the last battle that took place on Earth. So many gems and humans had fallen, so many never to see the others once more. They searched every nick and turn of the battlefield for any gem that survived.
"How horrible this had to happen.." Rose Quartz, leader of the Rebellion, said while she was assisted by Pearl, her loyal follower. After so many gems had turned into their corrupted selves, the crystal gems, based of Garnet, Pearl and Rose, made their duty to encase them into a bubble so that in the future they might be healed.
"Rose! I found a gem!" Pearl called out as she bubbled it, giving a quick glance towards the weapon that was beside it.
"Oh! My..." Rose said as she recognized the gem. It's oval shape and white diamond in the center, was a beacon to every gem in Homeworld. To be near his weapon could only mean that he's been here since the end of the last battle.
"What should we do with it?" Pearl asked as she handed the bubble to her leader.
"We need to send it back to the temple. He may be affected by the corruption and I would hate to see him in that state. Big Brother would've liked that way..." She then tapped the bubble and off it went.
"Big Brother? I think I've heard that name before..." Pearl mumbled to herself.
"He was someone to respect." Garnet said while continuing the search for any more loose gems in the battleground.
"Why respect a gem like this Onyx?"
"I'll tell you once we're done here, Pearl." Rose replied, while helping her remaining force.