Steven stared in awe, shock, disbelief, and a bit of fear at the swordsman named Topaz. Topaz was unsure of why Steven looked so amazed, and yet so nervous. "Is something wrong?" Topaz asked, wondering what Steven was afraid of. "You-you're a GEM!" Steven sputtered out, wondering if this newcomer thought like all of the Homeworld Gems, or if he was different, like the Crystal Gems. "Huh?" Topaz muttered curiously. Then he understood. "Oh. OH. I get it. You're probably not used to seeing a strangely colored guy pulling weapons out of thin air like that, huh?" "No, it's not that." Steven replied. "Then what's the problem?" "Aren't you gonna attack the humans or try to reactivate the Kindergarten or something?" Steven asked, afraid of how Topaz would react to Steven's knowledge of Gem history. "Oh. I see. You think I'm like them." Topaz replied, disgusted at the thought of the Homeworld Gems and their prejudiced way of thinking. "No, I'm friendly. I'm looking for... wait. How do you know about all of that? The Gem war and Kindergarten happened thousands of years ago." Steven, now knowing that he was in no danger, saw no reason to hide his connection to the Gems. He almost said so, too.
Garnet, Amethyst, and Pearl raced towards the four to make sure they were ok. "STEVEN! Are you alright?! When we got back we saw a huge hole in the wall and..." Pearl stopped inspecting Steven for injuries, and all three Gems looked at Topaz. "A Homeworld Gem! He must have attacked Steven!" Pearl said, getting the wrong idea. "Wait, what?! Other Gems?! Hold on! I didn't-" Topaz tried to explain himself, but Amethyst didn't give him the chance. She hit his face with her whip, leaving a cut on his cheek. Realizing they weren't going to let him say anything, he scowled at the trio, summoning his swords, but not drawing them. "If you let me explain, then I promise not to beat the tar outta you guys within the next ten minutes." Topaz warned confidently. The Gems ignored his warning and all charged at him at once. Topaz drew his swords and sprinted forwards, swords slashing at the Gems. After he had ran past, he stood up straight, his back to his opponents, raised his hand, snapped his fingers, and, as if on cue, the Gems suddenly felt all of the damage he inflicted. "I tried to warn ya." He said turning around and looking at his hunched over opponents. But one was missing. Suddenly, out of nowhere, Pearl slashed Topaz from behind. Spinning around to face the last Crystal Gem standing, he swung his swords at her at dizzying speeds. Pearl seemed to be just as quick as him, though. She did a backflip, landing 10 feet from Topaz. She raised her spear, the tip aimed at him. The tip then blasted dozens of white fireballs at a time towards him. But he was still too quick, as he deflected every shot back at Pearl. After almost being blasted full of holes from her own projectiles, she charged at Topaz. He saw it coming, however, and sliced her with both swords, damaging her as hard as possible without her getting poofed. Now that they were too hurt to attack just yet, Topaz finally told the Gems what really happened in their absence.
After the story, Steven asked, "I'm glad you saved me and my friends from the monster, but what exactly are you doing in Beach City?" "Oh, right," Topaz remembered. "I was about to tell you before I asked about how you knew so much about Gems. But it seems that question answered itself." He said, gesturing at the Gems sitting nearby. "I'm trying to find an old friend of mine. Despite her height, she's surprisingly hard to track down." "Who are you looking for?" Connie asked, intrigued. "Rose Quartz."
Holy plot twist!... Is what I would say if I hadn't said this in the summary. But hey, had to get readers interested somehow.