Demon Slayer: Breathing Water

The Swordsmen's Divergence

Percy looked as Tanjiro readied into his Uniform, "You look good" he said, Tanjiro smiled. "Thanks"

Percy smiled in turn, "But I look better." Walking over to a nearby bucket, he looked at his reflection. 

{The flames are water patterns, and it's Percy wearing the outfit, but aside from that everything's the same}

Sakonji had a Kimono designed for him, and with Percy's input, he now had a badass waterproof Kimono. Looking over, he saw Nezuko looking at them in awe. "Are you finished changing?" Sakonji asked, Percy, nodded, "Yep" then Percy reached into the chest where he had put his clothes, and took out his necklace, with a sad smile, Percy put it around his neck. "Tanjiro, Percy, sit down" Percy looked behind him to Sakonji, and sat down next to Tanjiro. "Now that you have officially become demon slayers, I would like to explain a few things." Tanjiro nodded, "Right", "First, the Demon Slayer Corp uniform you're wearing is made with a special kind of fiber. It's lightweight, Water-resistant, and non-flammable. A low-level demon's fangs and talons are incapable of penetrating that fabric." Percy's eyebrows raised, as he looked down at the uniform, 'like the starting equipment in a video game', "Now, the Nichirin sword. Its color varies from owner to owner, and each hue has its unique traits. However there aren't many demon slayers with black blades, so little is known about them. Some believe they're a bad omen." Percy frowned, and Tanjiro turned to look at Sakonji, "What do you mean bad omen?", "Black blades are rumored to only be wielded by a swordsman who has little chance of going very far." Tanjiro smiled, "Oh well, I don't care if I'm destined for greatness, because no matter what, I'll turn Nezuko back." Sakonji nodded, "Yes you will, I have no doubt you'll make that happen. One last thing, here" Sakonji said, handing Tanjiro a wooden box. "A box, to carry your sister during the day, built from a very light wood called Kirikimusuto, it's been coated in Rock lacer to reinforce the exterior and make it even more durable." Tanjiro smiled, "Thanks Urokodaki" Percy nodded, "This'll come in handy." Tanjiro picked the box up, "Oh wow, you weren't kidding it is light" Smiling, Tanjiro walked into Nezuko's room and placed the box down. "Nezuko, hop in for a ride, pretty please?" Tanjiro asked, Percy, watched as Nezuko grumbled, and moved towards the box, before quickly retreating. "Is she afraid of it?" Percy wondered. But slowly Nezuko entered the Box, and smiling Tanjiro closed it. 

"Before you go," Sakonji said, before walking up to Tanjiro, and buttoning up the top of Tanjiro's uniform, then he moved around Percy's Kimono, and patted their shoulders. With a grunt and a nod, he walked back. "All right Tanjiro, to the southeast!" Percy said as he began to walk, "You mean the Northwest?" Tanjiro asked, Percy, froze and turned around, "Wait, Tanjiro, what mission did your crow assign you?" Tanjiro tilted his head, "I'm going to a village Northwest of here, where young girls are disappearing, aren't you?" Percy's eyes widened, and he shook his head, "No, I'm going to a forest to the Southeast, where demons are rumored to be hiding" Percy felt dread as he realized that he wasn't going with Tanjiro. And Tanjiro knew it as well, "Hey, don't be sad Tanjiro, I promise you, we will meet again, and when we do, It'll be on good terms" Tanjiro smiled sadly, "Okay, Nezuko and I will wait.", Walking forward, Percy held out his hand, and Tanjiro shook it, "See ya, Tanjiro," he said, as they parted ways. 

As Percy ran through the countryside of Japan, his mind began to wander, back to Camp Half-blood, back to his friends, Back to Annabeth. 

"Percy..."

Hearing a faint voice, Percy froze in his tracks, and looked around, "Hello?" He called, 

"Perseus Jackson..."

Hearing his true name, Percy stiffened and looked around with a perceptive eye, "Hello?" He asked again, walking over to where he had heard the voice, which was on a nearby farm. 

Carefully, he entered, and looked around, until he felt something wet his shoes, looking down, he saw it was just water, but this confused him, how was he getting wet? Then a face appeared in the water, and Percy's eyes widened. "Pontus" Percy said in surprise, stepping back as the Primordial rose from the water, and looked at him with a faint smile, "Yes Percy, It is good to see you are safe" 

Questions swirled through Percy's head, but the first to make itself known was, "How is Camp Half-Blood?" Pontus smiled, "Ever loyal, you're friends are fine, together with Ouranos and an unexpected helper, we managed to calm the others down, they're currently writing their apology letters" the last part confused Percy, but another question came to his mind "How are you here?" he asked, and Pontus shrugged, summoning a pair of water chairs for him and Percy to sit on. And as he did, Pontus spoke. 

"I am the Primordial of Water Percy, the Embodiment of the seas, H20 given mind. This means that I embody all the water in your home realm, but also many other realms, currently I am linked to 28 other realms, each one different in its own way" Pontus said with a shrug. But Percy frowned, "Wait, what does this mean that Gaea can get to me here? And what is linked anyway?" Pontus held up a hand to stop the rest of Percy's questions from tumbling out of his mouth. "Firstly, Yes Gaea can technically get to you here. In fact, all Primordials can, but she won't you're under my protection. 2nd, we're Primordials, embodiments of the elements, so we aren't limited to some of the rules that the Guardians place on us." Percy frowned, and Pontus sighed, "Linked, is the number of realms that we are connected to, each time we enter a new reality, we are immediately linked to our respective elements there, and if there are already Primordials there, then we link with them, combining our essences, knowledge, and realms we are linked to. Think of it like a virus, that grows the more it encounters" Percy never thought he would hear a Primordial refer to something about themselves like a Virus, then again he never thought he would be in another realm either. "Why are you here? I don't think a Primordial God would just pop in to check up on me" he said, and Pontus sheepishly grinned, "Guilty, I'm actually here to tell you something." He leaned forward, "Recently, we've discovered a breach between our realms" Percy frowned, "A breach?" Pontus nodded, "Yes a Breach, a weak point between two realms or realities, now it isn't bad enough to allow anything through... yet. Eventually, in a while, it will grow large enough to allow monsters, gods, and other forces through to this realm, and vice-versa." a flutter of hope-filled Percy's heart, "So how long is a while?" he asked, and Pontus shrugged, "Well, for us Gods, very little, but to you Mortals. I'd say a couple of hundred years at most, and a couple of decades at the least" Percy blinked, before groaning loudly, "Great, so I'll either be dead or old when It's big enough to let me through", Percy suddenly heard Pontus shuffling around, and looked at him, "What? Pontus?" Pontus grinned awkwardly, "Well... Let's just say, that you're more than likely to be around when it opens, In fact, you'll be stronger then you are now" Percy frowned, "What does that mean?" but Pontus didn't answer instead standing up and looking at an imaginary watch, "Well would you look at the time! I've gotta go. Oh and one last thing, Percy, Annabeth said that if you let her get in the way of happiness, she'll become a God just to kick your ass" With those last words, Pontus vanished, leaving Percy alone and staring at the puddle with bewilderment. Looking around, he shook his head with a smile, yet inside he felt empty "I guess Annabeths' telling me to move on." he looked up, and his smile faded, "But how can I do that? How can I move past her?" A hurricane began to form above him, and he snarled, "Damn you Gaea, Damn you Tartarus and Nyx!" He screamed as lightning flashed.