Author Note: I suppose I should explain a thing or two before things officially get going. I was retired for several years and was enjoying it but every now and then, I come on back for enjoyment. The last several stories that I had done are, frankly, dog shit so I wanted to have a final hurrah, create the best one that I can while I still have time to do it. And this idea has been bouncing around my head for a long time. Yes, it is a crossover of RWBY and Harry Potter ultimately but I will pull from multiple different stories. No matter what, both these stories have such a huge part to come, I made them the core but that may change in the parts to come. Anyway, I thank you for your time reading this and I hope that you do enjoy it.
All Percy Jackson wanted to do was enjoy a simple boat ride after his successes along Vale's coast. No, it was almost as if the Fates themselves followed Percy along just to make a piñata out of him even further than they already have. It all started, to Percy's recollection at least, when he fell down the rabbit hole in Night's Palace and found himself in this bizarro world. Back when… "Can I help you, sir?"
"Ah!" Percy jumped, taking his eyes off the ocean. He caught his breath when it was just the captain of the ship, the Seafarer, staring down at him with concern. "Sorry, what was that?"
"No worries. You must be Hunstman material to be this watchful. I was asking if there was anything I can do to make your travel more comfortable."
"No." Percy shook his head. "No, I'm fine." The captain nodded and wandered off. Percy let out a long breath. He could sense the older man meant well but was pushing himself far too much for something that would get him taken advantage of. He focused his gaze back on the water, trying to find some pleasure at being near real water again. It has been only a month since he found himself standing at the edge of the world, redirecting Akhyls's poison against her. For a goddess of misery, she really couldn't handle her own medicine. Next thing he knew, he was running through the Mansion of Night hoping to come out on the other side. He held on to Annabeth as tightly as he could, he really did, but he had run into something inside that palace that made him lose balance. Fell right into his own little rabbit hole and spat out through the bottom of the ocean. Annabeth… Percy's breath quickened, thinking about what had happened to her. Did she make it out okay? Was she still alive? Percy had dealt with some strange circumstances, heck he even considered it normal at one point, but falling through a hole into the mortal world again was one experience he hadn't been prepared for. Least of all being one that showed a world where the moon was shattered basically in half. The only thing that kept him going was the whole new set of monsters that came after him, that part was standard in Percy's short and miserable life. Celestial bronze seemed to have a bad effect on them, worse than any monster he'd ever…
His thoughts were interrupted by the ship lurching back and forth. He heard some of the mortals around him asking if they were being jolted on some rocks below them, but Percy knew better. He knew the presence of a sea monster when he felt one. The captain had come out again, shouting "Everyone remain calm! Our weapons systems are coming online now!"
Percy stared out onto the ocean. The technology here may have been remarkable but monsters are monsters. Waves were beginning to form off in the distance; something was coming for them. Something big. Percy unbuttoned his trench coat and threw it behind him. His time on the run from the Gorgon sisters had taught him to keep as little on himself as possible. If he was running for a Guinness world records on travelling light, carrying around a pen that could double as both Riptide, his sword that saved his life more times than he could count, a pair of jeans and a yellow shirt with a red highlights and an orange star emblazoned on his chest, then he stood a pretty good chance at winning. "What are you doing?" Percy looked back at the captain, who look at him like he was a madman.
"Keep these people calm. I'll take care of this monster." Percy said then dove into the water before the captain could protest. Being in the water gave him fantastic belief, and sharpened his instincts. The second he landed in the water, he knew his exact latitude and longitude on the world that the people called Remnant. He was exactly 50.36 miles north and 30.41 miles west of an island the locals called Patch. That confused him greatly. Last he saw of the mortal world, it was still called Earth and he had never heard of kingdoms lasting the way these ones had. Did he get flung into some strange timeline like Kyle Reese or something?
Damn ADHD, Percy shook his head and stared straight ahead. There it was, was one of the creatures the people here called Grimm. They were far dumber than the monsters he was used to, if that was possible, but that didn't make them any less dangerous. Such is the ugly mug coming straight for him. Al Percy could tell from it was the razor-sharp fin sticking from the face of this Grimm. Gods, it was fast too. Percy held out a hand towards the Grimm, twisting it. The water bent to his will, forming cyclones that made the very ocean shudder. The Grimm thrashed as hard as it could, extending long fangs to try and bite at the beast. Grinning in satisfaction, Percy pulled out the ballpoint pen he could not live without, uncapping it. In a matter of seconds, Riptide spring to its full form, sunlight glowing against the rocky surface. The Grimm started fighting against the waves harder than before, to where Percy had to control the waves harder. But it was too late; the Grimm broke free from the tidal waves and rocketed towards him, its mouth opened up as if its insides were a black hole. It took everything Percy had to push himself forward, hoping to cut this thing apart. He rocketed to its side and tried to slice it open, but Riptide could only cut through the top layer of bone no matter how strong he was. It jolted past time, slimy skin brushing against his arm, as it crashed into the ship.
The Seafarer jolted violently against the impact as the Grimm ran into it. Percy lifted Riptide and, rocketing forward again stabbing it into the Grimm's side on its black surface. It let out a roar, pushing the ship back and knocking Percy away. Black liquid spilled into the water as it turned towards him. Percy held out his non-sword hand, the water contorting around him and holding the monster in place. Percy gripped harder but the pressure wouldn't crush this Grimm. It resumed chomping in his direction. Percy felt himself breathing harder now. The air of Tartarus still stung his very lungs and despite the wounds from Celestial Bronze, it still had lots of fight left. It glowered at Percy, its hatred undeniable. Then, to Percy's astonishment, it unfurled a pair of fins from its side. It roared once more, knocking Percy back then charged once more. It was so fast, Percy couldn't dodge at all without being eaten. Only one way to go then. With a jolt, Percy felt himself rocket towards the surface due to the water's propulsion, breaking the surface as he flew high into the air. Percy glared down at the water, watching as the Grimm break the surface, its fins splayed out far and gave a large flap.
"I never thought I'd hate fish until now." Percy muttered, staring down at imposing death as he knew it. At least, for most people. But Percy knew what he had to do. As he fell back to the water, he slashed down onto the central jaw of the Grimm, using the momentum to swing himself across the Grimm's face and onto its back. Gripping tightly to the mask, Percy flipped his grip on Riptide and stuck it deep into its eye. The monster gave another loud roar before it began falling back into the water, its essence no more liquid but rather gas now. 'Like monster dust but black' Percy thought to himself as he landed on his back in the water, staring up at the sky.
Percy would never admit this aloud, but that was fun. That was the most fun he had fighting monsters since who knows how long. Not fighting just for his survival, but just for the fight itself. It gave him a sense of purpose that he hadn't felt any other time in life especially when Annabeth had his back. Annabeth…
"Ahoy! Come back aboard." The captain of the Seafarer threw down a life preserver, the other passengers staring down at him, some in relief and some in fear. Percy didn't care as he grabbed the preserver which pulled him back onto the deck. "That was Huntsman material if I've ever seen it. They'd be fools to reject you after this."
"Glad to know I gave you a good show at least." Percy grinned weakly up at the captain. The passengers all huddled around him, talking all at once.
"Thank you for saving all of our lives. We're in your debt." Someone in the crowd, a government man based on his dress, was saying but it all blurred together now.
"Just, stop. Let me sleep the rest of the way." Percy wheezed out. He felt far more exhausted than he should have been. Tartarus took more out of him than even he expected. Every muscle in his body ached and he couldn't even keep his eyelids open. He contented himself now with leaning his head back against the bar. Darkness overtook him immediately.
