A/N: People asked for more, so I decided to make this a little series of oneshots. This one is technically about prophecy confusion, but pretty much is just my excuse to write a "Leo Coming Back" fic with Will in it. So, I hope you guys like it. Please let me know what you think.

By the way, this is after Jason finds out about Solangelo. I'll write a different chapter where he doesn't know and then finds out, but for the purpose of this one, he knows.

I'll reply to reviews and then we'll get started.

ICan'tStopEffingChangingMyName: Why do you want to slap me? It seems like you liked it ;D Thanks for reviewing!

baby Cyclopes: Glad you liked it :D I'm definitely going to write Jason's reaction to Will and Nico dating (possibly next but who knows). Thanks for reviewing!

Doclover: Glad you liked it. Thanks for reviewing!

GhostWriter1864: I'm glad you liked it! I'm gonna explain my Jason's glasses theory later in the A/N, so thanks for asking :) And thanks for reviewing!

Guest: Your wish is my command. Thanks for reviewing!

Elements1999: I didn't mean that Jason wouldn't accept Will and Nico. I just meant that he'd get really super excited and ship the heck out of it, that's why Nico wanted to hide it from him. Sorry for the confusion. Glad you liked it :D Thanks for reviewing!

Kayla Daughter of Thanatos: I noticed the glasses on the cover before I read the scene, so I was actually really happy when that scene existed, cause I saw the cover and I was like "Why… is Jason wearing glasses…?" but then (since Rick only mentioned them like three times afterwards) I usually just imagined him without them. Glad you liked the story. Thanks for reviewing!

TheAwesomeQueenOfNerds: THANK YOU SO MUCH FOR GIVING ME THEIR COUPLE NAME I NEEDED THAT. I ship it so hard. Thanks for reviewing!

CreCra: By multi-chapter, I'm assuming you mean not this, since this is just gonna be a bunch of unrelated oneshots in one fic. As for a legit multi-chap though, I don't have one planned right now, but I'm sure one will be coming soon. If you have any ideas, let me know, cause I have no idea what it'd be about. Thanks for reviewing!

ShipperofDemigods: Your description of your reaction to this fic made me so happy, you have no idea. Glad you liked it :D Thanks for reviewing!

AemiliaeHistoriam: Crazy penname, wow. I like it, it's cool. So glad you liked the fic! And thought it should be canon lol I wish :D Thanks for reviewing!

TheKeyIsLove: So glad you liked it! Thanks for reviewing!

burningmoonlight: :D :D :D :D :D :D :D :D :D :D Thanks for reviewing, bae.

hoOPJO: Glad you liked it :D Is this update soon enough for you? Thanks for reviewing!

Nicky6: So glad you liked it :D Thanks for reviewing!

rainbowchameleon: Glad you liked it :D Thanks for reviewing!

MelodyPond77: I totally know how you feel about not having friends who've finished it, I'm exactly the same. Glad you liked it (and I'll be posting my Jason theory below, btw). Thanks for reviewing!

Naureen97: So glad you liked it. Thanks for reviewing!

J'aime lire: :D :D :D :D :D So glad you liked it! Thanks for reviewing!

I sea fiera: YES THANK YOU FOR GETTING THE HOBBIT JOKE. Glad you liked it :D Thanks for reviewing!

RosemaryJohnSherlock: So glad you liked it :D Thanks for reviewing!

metheperson7: That is a beautiful explanation for Jason's glasses, thank you! Happy Nico is physically all I wanted from BoO too, and I was so happy with it. Thanks for reviewing!

TheSummerNightingale: I'm so glad you liked it :D :D :D :D Thanks for reviewing!

Separate Entity: LOL YOUR REVIEW MADE ME SO HAPPY! Thanks for reviewing! :D :D :D

ghostyStarr: So glad you liked it :D :D Trust me, I would be rereading all the canon Solangelo, but my friend still has my copy :P Thanks for reviewing!

C. Potterhead: So glad you liked it! Solangelo high school AU is a great idea, which I will definitely take you up on, and don't worry, there's plenty of Percabeth to come :D Thanks for reviewing!

Smart Girl: I only reply to your reviews for principle's sake...

nobaru rei: Sooooooo many feels. Thanks for reviewing!

Jaaaay the Duck Queen: Glad you liked it :D :D :D Thanks for reviewing!

Guest: So glad you liked it! Thanks for reviewing!

Anyway, before we get to the story, I'd like to explain my theory about Jason's glasses that some people asked about. If you don't care, go ahead and skip this.

So basically my theory is that Rick wrote the whole book, and then, like three days before it was supposed to come out, he received the cover. And he was really excited, he was like, "Wow, you got the weapons in the hair and Hazel's horse, this is really cool, man" and then- "...Why is Jason wearing glasses?" And the artist guy (I don't know his name) was just like "Wait, he doesn't usually?" and Rick was just "No… Where would you even get that idea?" and he was like "I don't know, man, I imagined him with glasses. He'd look cool with glasses." And by then it was too late to get another cover drawn, so Rick just sighed, told his editor to stop publication, opened up his 500 page Word document, and added a scene where Jason got glasses. Then he scrolled down, mentioned the glasses like three times within the last ten chapters, and then sent the book off.

So basically, the glasses were not a choice. Hence, them only getting mentioned three times after their existence.

ANYWAY, now we read the fic. Hope you guys like this. Please review!

Disclaimer: I own nothing.

Btw, this chapter's in present tense for absolutely no reason other than I like present tense.

Oath to Keep With a Final Breath

As much as Nico likes there being a Hades Cabin, he really doesn't like the cabin itself, so when Will walks past Cabin Thirteen and sees Nico sitting cross-legged on his coffin-bed in the middle of the day, he has a right to be concerned.

"Nico?" he asks, knocking on the wall. "You all right?"

Nico looks up at him, startled, as if he hadn't heard Will come through the door. "What? Yeah. Fine. Thinking."

Will raises an eyebrow, coming over to sit on the bed next to him. "About?"

Nico frowns, like he's not even really sure, then hesitantly says, "Prophecies."

"Well, that's never a good sign."

Nico shrugs, not denying it. "I've been going over the Great Prophecy in my head, making sure we completed all of it. And… well… just go through this with me, okay? Seven half-bloods shall answer the call- pretty straight-forward. To storm or fire the world must fall. If you think of Gaea as physically 'the world,' then she fell when Leo blasted the Hades out of her. Then, skip a line, Foes bear arms to the doors of death- that's Percy and Annabeth kicking butt in Tartarus. But then, the third line… An oath to keep with a final breath…"

Will frowns. "Yeah? What about it?"

"The only one who died was Leo," Nico says softly. "What oath was he keeping?"

Will studies Nico's face as his boyfriend frowns thoughtfully.

"You have no idea how much that line scared me," Nico says, barely above a whisper. "I tried so hard not to make promises… Of course, I promised Hazel all kinds of things right before going into Tartarus."

Will frowns, noting the look of pain in Nico's eyes. He leans forward, pressing his lips against his boyfriend's. "Well, obviously, you have plenty of breaths left. Why don't we go ask the others what they think?"

Nico nods, but pulls Will back onto the bed when he tries to stand.

It takes them awhile to leave the cabin because Nico likes kissing and Will is weak, but eventually, they're able to locate the Seven (minus Hazel and Frank, who are on their way from California) and corner them all into the Poseidon Cabin.

"Well, think about it this way," Percy says thoughtfully after Nico explains his predicament. "Leo had the physician's cure, so obviously he thought he'd be able to use it. And he specifically made sure that once he could take care of Gaea on his own, everyone else was far out of the line of fire. So that must mean he didn't think he'd need anyone to give him to cure. So maybe… maybe he put the cure into the ship, and programmed it so that as soon as he died, Festus would give it to him. And then… and then maybe he didn't immediately come back to us, because he'd made an oath to Calypso to go rescue her, and he'd somehow found a way to get back to Ogygia, so that's where he went!"

There is silence as the others stare at him, obviously not believing his theory.

Then, a voice speaks.

"Wow, guys. I know I was gone for awhile, but when did Percy become the smart one?"

To say that all hell breaks loose would be an understatement.

Multiple swords are drawn at the sound of the familiar voice, then immediately dropped when the face is recognized. Leo Valdez stands in the cabin doorway, holding his arms out expectantly as his friends surge forward to hug/attack him. There's laughter, and screams, and more "HOW ARE YOU ALIVE"s than Nico can count. Nico hangs back with Will, watching with amused wonder as Leo promises his friends the explanation they deserve, trying to ignore the completely wrong feeling Leo gives him.

He should be dead. Why isn't he?

"Guys, guys, calm down, let me breathe," Leo laughs, giving Piper one last hug before pushing her off of him. "I'll explain everything, just give me a-" he cuts himself off, suddenly staring at Will. "Who's this guy?"

"Oh, I'm Will," the son of Apollo introduces himself, holding out a hand. "Son of Apollo. I think we met when you first came to camp, before you got all famous, but you might not remember me..."

Leo stares at his outstretched hand, looking hurt. "You guys replaced me?"

"What? No!" Percy insists. "Leo, this is Nico's boyfriend."

Leo suddenly grins. "Oh, cool! Welcome to the family, man!"

Leo excitedly shakes Will's hand as Nico rolls his eyes and tries not to blush. He's glad his friends are so accepting, but he's not so sure how he feels about his ex-crush just immediately referring to Will as his boyfriend.

Even though that's what he is.

The sound of a horn blowing outside provides a welcome distraction, and Nico grins excitedly. "Guys, it's the Romans!"

He hurries outside to where the legionnaires are lining up to hear Reyna and Frank's "Welcome Back to Camp Half-Blood" speeches.

Nico resists the urge to shadow travel and instead runs as fast as he can.

"Reyna, Frank! Skip your stupid praetor speech, Leo's back!"

The chaos is even more pronounced this time, as the praetors forget their protocol to race towards Cabin Three, Hazel right behind them.

They find the son of Hephaestus sitting on Percy's bed with an unnaturally beautiful girl next to him. Hazel almost sobs at the sight of them, and Leo winks at her before accepting a bone-crushing hug from Frank.

As Leo introduces them all to Calypso, Nico slips outside the cabin and leans against the wall with his eyes closed.

It isn't long before Will finds him.

"You all right?"

Keeping his eyes closed, Nico nods. "I just couldn't be in there much longer. Leo's soul... He shouldn't be alive. It feels weird."

"I think you're the only one who thinks that."

Nico opens his eyes and frowns at Will. "What do you mean?"

The son of Apollo shrugs. "Well, if you died and came back to life, I definitely wouldn't care how wrong it felt. I'd just be happy to have you again."

Nico feels something strange in his heart a million times worse than the feeling of an undead soul.

He finds himself liking it.

"They're gonna be pretty busy for awhile," Nico guesses. "You wanna head back to my cabin and take advantage of its emptiness before Hazel shows up?"

Will grins. "I'd love to."

A/N: You can decide for yourselves what they do alone in the Hades Cabin, make it as innocent or mature as you want. As for me, writing this chapter made me think that it's completely possible that the physician's cure has side effects, and Nico's gonna have to counsel Leo on being undead... As sad as that is, it sounds fun, so I might write it.

Anyway, hope you liked this. I think the next few chapters are gonna be Nico telling other people about him and Will in various ways. Jason will find out last because Jason is bae.

Please review!