New main characters:

Drusy Quartz: Tall, big curley hair, her main weapon is a bedazzled whip. Girl, sassy, tall, kinda like a fun but caring aunt.

Violet Sapphire: Fairly tall, long flowing hair, her main weapon is a big hammer. Girl, calm, doesn't really understand jokes, a fusion between a Sapphire who is a jokester and calm, and an Amythest who is strong and doesn't understand most jokes, kind of big sisterly.

Star Ruby: Average height, short spiky hair, her main weapon is a sword. Prankster, protective, fun-loving, thrill seeker, like a little sister.

Kevin Universe: An excitable yet a bit shy, funny thirteen year old boy, grandson to a now passed away Steven Universe, inherited some of his gem powers like shield, a weapon which for him is a yo-yo, bubble, and being able to fuse with gems and humans, and of course musical talent, just with a violin. Is pretty like Steven, just a little more mature in some areas and closer with most gems. Is a Crystal Gem with the other Crystal Gems, aka Violet Sapphire, Drusy Quartz, and Star Ruby, they fight for what's right and protect the universe!

Jade: A tall, buff warrior from the more olden Homework times back in the old war, still hates the Crystal Gems, is like Jasper but unredeemable, forces fusions, fights with twin blades, a main antagonist.

Story:

So basically, Kevin Universe formed the new Crystal Gems after yet another, albeit smaller, Gem War due to some rouge gems fighting against the new order and peace Homeworld has with humans and New Crystal Gems. So there they are, Kevin, Star Ruby, Violet Sapphire, and Drusy Quartz, all fighting for freedom and justice. Kevin's powers are like Steven's, just a bit weaker, but he can still fight well. One of the helps he has is this really old silver necklace that has a blue gem in the pendent that he found at a thrift store, though non of them realized the gem was actually a live gem, a blue pearl to be specific, you to be even more specific. You were the first ever Blue Pearl that served Blue Diamond, though the first ever Pearls for Diamonds proved to be way too powerful and posed a risk to the Diamonds' powers, so they were all shattered, but Blue Diamond felt bad for you so she just locked you away inside your gem form for thousands upon thousands of years, forgotten and erased. But now you help Kevin unconsciously, giving him advice only he can hear, like a conscious.

One of the main leaders is this Jade warrior, imagine Jasper but meaner and worse is basically every way except physical strength. She hates humans, hates the Crystal Gems, and hates anyone who doesn't side with her. So the Crystal Gems go out to fight corrupted gems and rebel gems. Uncovering ancient stories since when the Diamonds were first created and old gems now lost to time.

So, that brings us to the present day, where the Crystal Gems were fighting against rebel gems, plus Jade, and it was a tough battle. There were so many rebels, it was impossible to keep track, and Jade knew she was winning. They managed to gem form and bubble the rebel gems, but Jade was now fighting the Crystal Gems who were already exhausted and beaten up. Jade threw a punch at Kevin, and it broke his pendent, the pendent that was the only thing remaining from his parents who moved away, leaving him in the care of the Crystal Gems in the first place. It broke, they were sad, but suddenly the gem began to glow and shake, and with a beam of light and mist, there was a silhouette, and there you were! No knowledge of what's going on. Not knowing about any of the Gem Wars, what happened previously, or how you got here. Just that you were supposed to serve and protect whoever freed you.