"Tell me why we're here again?" Ruby asked her partner Blake. "I mean, at the museum?"

"Because they have uncovered ancient weapons that are older than Dust," Blake said with an oddly excited tone for someone who is mostly an introvert.

Teams RWBY and JNPR are at a museum that holds ancient weapons from before Dust was found in Remnant. Ruby invited their sister team along so that her own team wouldn't have to suffer from being in a museum.

"That is impossible, Blake," Weiss said. "Nothing can be older than Dust."

"What about my family?" Jaune asked the Heiress. "We are from before Dust was discovered and we have evidence to support it. Now then, what's so important about these weapons?"

Jaune then saw a tarnished bronze sword with an illegible inscription, and what appeared to be a trident near the handle. Unknown to all, but Jaune, the sword gained a sea green glow... Almost as if it had an Aura.

"...ne. Jaune. Jaune?" Pyrrha asked the Arc Scion getting his attention and pulling his gaze from the sword. "Are you alright? You were looking at that sword for almost 5 minutes."

"Uh... Yeah, yeah I'm fine," Jaune said before looking back at the sword. "Where did they find this sword?"

Pyrrha then looked at the plaque and said, "This says that it was found in a temple a couple kilometers north of Mistral. Why?"

"...I don't know... It just looks familiar I guess," Jaune said his ocean blue eyes slowing gaining a sea green tint to them.

Meanwhile, Blake, the only faunus of the group, was looking at a tarnished bronze statue of what appeared to be a woman, before she looked over at a bone sword and her eyes became slits as they gained some stormy grey.

"Blakey?" Yang asked, knocking the Cat Faunus out of her trance. "You alright?"

"Huh? Oh yeah, I'm fine," Blake replied, not really paying any attention. "Where did they find this one? It appears to be made out of a Grimm Mask more than anything..."

She then read the plaque and it said, 'Bone Sword found in the Forests of Menagerie.'

Weiss was also looking at a tarnished bronze knife as an image of the Fall of Beacon flashed across the knife causing the Heiress to back up with a startled look on her face.

"Weiss?" Ruby asked her partner. "Are you okay?"

"I-I... I'm fine," the Heiress replied. "Thought that I saw something in the knife... I guess I was just seeing things."

Before Ruby could reply, a loud crash was heard as a civilian screamed out, "Grimm!"

Teams RWBY and JNPR then ran out of the museum and Nora asked, "What the hell is that thing?!"

The grimm was like every other Grimm in Remnant, same black body, bone mask, and red eyes, but this one had a humanoid body, the head of a bull and an axe in the shape of the last letter of the Greek Alphabet. This was ancient Grimm, one that can smell certain aura signatures and then it hunts down the ones it smells and it's called...

"A Grimmotaur," Blake said. "One of the most Ancient Grimm alive and only 1 has killed it before."

"Then how is it alive?" Weiss asked.

"Because this Grimm can reform on it's own and is just as intelligent as a young child," Jaune said. "My uncle, Theseus, has killed this thing about 5 times in his lifetime and now it wants me since it can smell my aura and knows that I'm related to the one who killed it before."

The Grimm then smelled Jaune and dashed towards the Arc, before Jaune said, "We need to move now!"

The two Teams then dodged to the right and left, before the Grimmotaur crashed through the museum doors and knocked down three display cases before getting back up and roaring at Jaune Arc. Speaking of the Arc Scion, Jaune saw that his scroll fell out of his pocket when he dodged and that it was also smashed to pieces, before he looked to his right and saw the tarnished bronze sword before he looked at the Grimmotaur and he quickly dodged and picked up the sword as the Grimm charged at the Arc Scion. Jaune's aura flared up as it changed to a sea green color and his eyes gained a sea green tint to them, but retained their normal ocean blue.

"You ready ground beef?" Jaune asked with a smirk as he held up the sword that had a glowing trident on it. "I killed you once before at home when I was 12, and now I'm ready to do so again."

The two then charged at one another and just as the Grimmotaur swung his axe, Jaune jumped up, slashed a horn off with the tarnished bronze sword before landing in a crouching position and then driving the sword in the back of the Grimm and then jumping backwards, flipping in the air and landing perfectly as the Grimm turned to black dust instead of becoming wisps of darkness like normal grimm do.

"The last time I fought that," Jaune began with a smirk. "I killed it with my own two hands and passed out immediately afterwards... Fun times, fun times."

"Jaune!" Pyrrha said as Jaune turned. "How did you do that?"

"I just followed my instincts," Jaune replied before he dropped the sword as he gripped his head in pain. Jaune then fell into unconsciousness and when he awoke, he was in a white void that had hints of sea green which soon turned into a human male with raven black hair, sea green eyes and wearing an orange shirt and a pair of jeans and a pair of blue nikes.

"Hello Jaune," the male said. "My name is Percy Jackson and you are my 4th life."

At the hospital a few hours later

Teams RWBY and (J)NPR were watching Jaune through the window at a hospital in Vale, when Headmaster Ozpin walked up and said, "What happened?"

"We were at the Museum of Ancient History," Pyrrha began. "Ruby invited us along and when we arrived, Jaune saw a tarnished bronze sword that was found in a Temple North of Mistral. He appeared to be in a trance and I was trying to get his attention for about 5 minutes."

'I might want to have a look at that sword,' Ozpin thought, before he spoke aloud and said, "What happened after that?"

"A Grimmotaur attacked in the middle of the city," Blake said as Ozpin looked at the Faunus in shock. "Jaune managed to kill it with the bronze sword before he dropped it and fell unconscious while holding his head."

"And then we brought him here," Ren finished his face showing concern for his leader. "Will he be alright, Headmaster?"

Ozpin hummed and said, "Did anything else happen while he was on the way here?"

"Fire Hydrants did explode and the water somehow turned into shapes of Tridents..." Ruby said. "Is that natural?"

"Of course not, Ruby," Weiss replied. "That is not natural..."

"Do you know what's wrong with him, Headmaster?" Blake asked with an odd tone to her voice.

"I believe that it has something to do with the bronze sword that he used to kill..." Ozpin trailed off as he looked at Blake and said, "Did you say "Grimmotaur", Ms. Belladonna?"

"Yes, I did... Is it important?" Blake asked.

"It is one of the most ancient of Grimm," Ozpin informed the two teams. "Along with the Manticore Grimm, the original Chimera Grimm, Medusa, which is a Grimm able to pass off as human before killing her prey by turning them into stone, Nemean Grimm, which is impervious to all attacks and is only able to be killed if shot through the mouth or if you get lucky enough and crush it with your bare hands, and many, many more. All of these Grimm don't die, they reform and are able to sense one's aura. I've found that they are more attracted to the most powerful auras."

"If they can't be killed for good, then how are we supposed to defeat them?" Pyrrha asked.

"You can't," Ozpin said. "I've seen these monsters with my own two eyes and I've barely survived against one... I'm grounding you all to stay at Beacon until they are gone from the city, along with the rest of your classmates."

In Jaune's Mindscape

"So let me get this straight," Jaune said rubbing his forehead. "I am your 4th reincarnation after your third life more than 20 millennia ago, and you awoke because I grabbed the tarnished bronze sword? Oh yeah, and your a Demigod, a human/god hybrid. You can control all forms of water, can make your own personal hurricane and cause earthquakes and you are the greatest swordsman in history. Did I get all that?"

"Yeah, that's pretty much it," Percy said with a shrug. "You will gain my powers, my skill and a bit of my looks. Nothing too major though. Just a beach tan, a raven black streak in your hair and a sea green tint to your eyes."

"What should I tell my friends when I wake up?" Jaune asked his first life. "I'm a terrible liar by the way."

Percy just smiled and said, "Tell them that you've unlocked your semblance. Since you don't have one yet, it'll do for now."

"But what about once I unlock it?" Jaune asked as Percy thought about it before saying, "I've got nothing for that at the moment... Also, you're about to wake up and then I'll disappear until the next time you pass out. See ya!"

Just as Percy was beginning to fade out, before he said, "Oh yeah! Before I forget, try to find my reincarnated friends. They will help you get stronger."

Outside of Jaune's Mindscape

Jaune's ocean blue/sea-green eyes fluttered open and he turned his head around to look at the room, before his eyes landed on a ballpoint with the word 'Anaklusmos' writen on the side. Jaune then got up and said, "Riptide... So that wasn't a dream..."

Jaune then saw a pile of clothing and a note that read, "Here are some clothes for you, Jaune "Perseus" Miles Arc, oh and... Do be careful and try not to bring too much attention to yourself. From, Chaos the Mother of Light and Darkness"

Jaune put the note down, before getting dressed and uncapping the pen causing it to turn into a bronze sword with a leaf shaped blade and a leather gripped handle that was riveted with gold studs on it's flat hilt. It was about 3 to 5 feet in length, including the hilt, and was perfectly balanced in his hands, more so than Crocea Mors he noticed.

Jaune then recapped the sword, placed it in his pocket, before he smirked and turned into water vapor, before appearing in Ozpin's office and giving a fake cough scaring Qrow, Winter, Glynda, Ironwood, and Ozpin himself.

"Am I interrupting something?" Jaune asked as he leaned on a wall. "Or can I speak?"

"Who are you?" Ironwood demanded as Winter drew her sword.

"I'm not afraid of Ice Queen Sr." Jaune stated simply with a stoic expression, his confidence having grown since awakening his powers just 30 minutes prior. "Now then, how is my team, Oz? You replace me as leader yet?"

"Who are you boy?" Ironwood asked.

"You must Irondick," Jaune said, not scared a bit. "My father told me about you... Said you were a paranoid jackass who cared for only himself and his team and not about any other person or thing."

Winter then charged at Jaune, but the reborn Son of Poseidon stopped her with a raised hand and said, "I'm not here to fight, Ms. Schnee, I'm just here to get to my team."

"Who are you and how can you do this?" Ironwood asked, pulling out a gun.

"The name's Jaune Arc," Jaune replied, making a trident out of water vapor. "I just awoke from a 3 week coma and I unlocked my semblance because of it... As you just saw."

"And you already have a mastery of it, Mr. Arc?" Ozpin asked. "That's quite impressive, Mr. Arc."

"It seems that I was made for water," Jaune replied with a small smirk, before getting a small frown and saying, directly to Ozpin, "I don't appreciate the plan you have concerning Amber, Oz, don't think for a minute that I will let my partner be turned into a pawn like my little sister, Ruby. Speaking of the Silver-Eyed Warrior, Qrow, how would she react to being used as a pawn for a war that can't be won? Well, not without godlike power."

"How do you know all this?" Ozpin asked with a raised eyebrow seemingly calm.

"I know, because I met their mother and trained with her during my three week long coma," Jaune replied, getting Ozpin to freeze. "I met the mother of Darkness and Light, Oz, and she gave me great power and a great responsibility... To protect Remnant from the Grimm and their Queen."

The room was silent until Ozpin said, "Very well Mr. Arc. And to answer your earlier question, yes, your team awaits you as their leader."

"Thanks," Jaune said before walking towards the elevator and heading to his room.

Once he was out of the room, Ozpin said, "He has a different aura than before... it used to be bland, but now it's almost ocean like. I'd suggest that we keep an eye on him."

"What are you talking about Oz?" Qrow asked.

"Think of Jaune Arc, the old Jaune Arc as opposed to the one we just met, as one who was just plain, bland, weak... But this one, this new Jaune Arc, is now like a veteran warrior, one who has been through so much and one who can't be contained, unpredictable, dangerous, and powerful... Much like an ocean."

"What of his aura?" Glynda asked. "Did you feel it? How vast and powerful it felt even suppressed?"

Everyone there nodded, and James Ironwood asked, "Are you sure that it's wise to leave someone as powerful as that walking around? We aren't even sure if he's on our side."

"Of course he is," a new voice said as they all turned to the entrance and saw a beautiful woman with galaxy eyes, a figure that made both Winter and Glynda jealous, and wearing a shimmering dress that was littered with what appeared like stars. "Greetings Inner Circle. My name is Chaos and I am the mother of all creation, including the two brothers of Darkness and Light. I am here to warn you to not get on Jaune's bad side for if you do, he will destroy you all. But, do not worry, he is loyal to you unless you do something to break that loyalty... And I'm telling you to not break his loyalty, for I have seen what happens if it is ever broken and it's not a pretty sight. Have a good day Ozma and I'll be sure to speak with my sons about your curse."

With Jaune

"I wonder how Jaune is doing?" Jaune heard Ruby ask herself from around the corner. "Maybe I could get him some cookies..."

"Well I'm doing fine Rubes," Jaune said as he turned the corner. "But I would like some blue cookies."

"Jaune!" Ruby shouted before dashing towards him and almost knocking the reborn Son of Poseidon to the ground. "When did you get up?"

"Not even 30 minutes ago," Jaune replied. "But I'm feeling fine, in fact, I'm feeling stronger than ever. Where are the others?"

"Going to visit you," Ruby replied as Jaune sighed and said, "Contact them and tell them that I am fine and already at Beacon."

Ruby did as he said and Jaune looked out a window, before saying, "I'm going to go practice in the forest, don't wait up."

As Jaune turned a corner, Ruby followed, but when she got around the corner, Jaune was gone. As if he wasn't even there in the first place.

Confused, Ruby asked herself, "Why is he going to practice in the forest?"

As she walked back towards her room, the silver-eyed girl suddenly stopped and said, "Jaune's going to go to the forest alone?! I've got to stop him!"

Emerald Forest

Jaune was a hurricane as he tore through Grimm after Grimm, until the Grimm were sent running back to where they came from and Jaune said, "I think that's enough training for the day..."

He trailed off as a Chimera Grimm walked out of the forest and stood in front of the reborn Son of Poseidon and spoke with an accent.

"Hello, Jaune Arc," the manticore spoke as Jaune raised an eyebrow before asking, "Dr. Thorn?"

"So... He was right, Percy Jackson is still living," the Manticore said confusing Jaune. "You will find out in time, Mr. Arc, but for now? You just prepare yourself for the 3rd War!"

The Manticore then vanished and Jaune said, "Just my luck."