Check out Last Defense: The Lost Files to find out what happened on Jason's quest. I'm sorry for the slow updates, and now it's probably going to be slower because of Last Defense. 

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Today started off like any other day. We did our normal routines, and went to breakfast.

It was a normal day. Until Jason came stumbling out of his cabin, running to Chiron.

"Chiron!" he panted, trying to catch his breath. "I-I need to talk to you... alone. I had this dream-"

Chiron smiled, but I could tell it was serious. "Come with me, then," he said. "Tell me what happened on the way to the Big House."

At first, I watched him walk away. Some people seemed to brush the issue aside as a normal occurrence, but I knew better. And I suspected Jason would somehow end up going on a quest. And I wanted to know why. 

As I left the mess hall, I put on my invisibility cap. I followed in silence.

"-and they were on fire," Jason said. "Everything was on fire!"

"I suppose we were wrong to assume he was dead, then," Chiron said.

"When I saw him, it looked like he saw me," Jason explained. Who was "he"? "But he ran straight through me!"

"If I am correct," Chiron said, "then Leo is in need of help. I think it would be best to see Rachel."

Leo? What did Leo have to do with this? How isn't he dead? Wait... the cure? It worked?

Jason looked confused for a second. "The oracle?"

"Yes," Chiron confirmed. 

Jason nodded, said a quick goodbye, and started towards Rachel's cave. I followed him at a steady pace. 

"Hello?" he asked when we arrived, attempting to knock on the curtain.

"Come in, Jason," a voice I recognized as Rachel Dare said from the inside of her cave.

He looked hesitant, but went in anyways. I decided it would be too risky to go in, but when he opened the curtain I caught a glance of Rachel's newest painting- two boys looking almost conjoined into one, and a frightened Leo Valdez standing in the middle of a large fire. 

I recognized both of the boys. Jason Grace and my lost boyfriend, Percy Jackson. 

I held my breath so the sob I was holding in wouldn't escape my throat. 

"Uh, hi," he said awkwardly. (My cat typed the hi! :D)

"You came here about that dream you had, right?" she asked.

"How'd you know?" Oh, Jason. Poor, innocent Jason.

"Look at this, and tell me if you see something familiar," she said, most likely pointing to the painting I saw.

"It's my dream," Jason gasped. "But who is-"

"I think you already know the answer to that." I imagine she rolled her eyes while saying that. "Ask your question."

Jason sucked in a breath. "How do I find Leo?"

I saw green smoke curl out from under the curtains. 

"One man shall walk alone,

to . . . in the unknown.

Fire burns . . . love,

. . . one shall . . . the dove.

Awaken a beast . . .

and . . . fail to correspond."

I strained to hear the full thing, but it was as if something were keeping me from hearing it. I was sure of one thing, though: Jason was going on this quest by himself. 

I ran away, deciding not to stick around any longer. I'd heard enough. 

A few hours later, Jason came to me, a bag hanging from his shoulder. 

"Hey Annabeth," he said. 

I looked up from my book.

"Oh, hey Jason, what's with the bag?" I asked, playing dumb.

"I'm going on a quest," he said with a shrug.

I faked surprise. "What for? Do you need me to come?"

He looked a bit sheepish. "Oh, no, it's a solo quest. I'm going by myself."

I narrowed my eyes. "What's the quest for? Do you have a prophecy?"

"It's uh, a secret," he said, looking a bit scared. "And yeah, I have a prophecy."

I rolled my eyes. "Whatever. But when you get back, I want all the details. Did you tell Piper?"

"Yeah, a few minutes ago," he said. "I just wanted to tell you before I go."

"Okay," I said. "Have fun on your top-secret quest. Don't die or get banished to Tartarus, okay?"

He paled. "O-okay." He started walking away. 

"Bye!" I called, rolling my eyes. I went back to reading my book, not knowing I'd never see him again.

"In times like these, we have no words," Nico di Angelo said, looking towards the light blue shroud. "We only have each other. Today we come together to mourn the passing of a beloved hero and friend, Jason Grace, the son of Jupiter and Beryl Grace, and brother to Thalia."

I look around at the crowd. Most of Camp Jupiter is here, and we're all here for the same reason- Jason's death.

"We have no need to mourn," Nico said, though it's clear he was as sad as sad as the rest of us. "I can assure you he's already at peace with his friends and family in Elysium."

I look over next to me, and Thalia squeezes my hand as if to give me reassurance. A tear slips down her face.

I turn my gaze over to Piper, who was supposed to make a speech. She didn't. She choked up the moment she stepped onto the stage.

I hugged her as she sobbed into my shoulder. She did the same for me, so I returned the favor.

Jason was lucky, I suppose. He didn't end up in Hell.

I spot Rachel towards the edge of the crowd, wearing her normal jeans and a black t-shirt, looking out-of-place with the darkly dressed crowd.

I make my way over to her, and she gives me a small smile. "It's my fault, isn't it?"

"What?" I exclaim. "No! What made you think that?"

"I'm the one who gave him the prophecy!" she cries.

"So? It's not your fault. It's no one's fault, except for the monster who killed him," I said, telling her the truth.

"Thank you." She smiled, and walked away, leaving me alone with my thoughts.