Prompt in detail.

There was a war - Gods versus Humans. The Gods won, of course, but after they burned Earth to its core, there was nobody left to turn on but their children. So they killed them.

HOO main characters are the survivors. Some may die along the way, but yeah. They're trying to fix it. First PJO fan fic, please no hate!

Annabeth

She had never wanted to get caught up in a war. Especially not one where she was in the middle. Torn apart from both sides, no-one could trust her, and she could trust no-one. With one exception.

Demigods. Greek demigods.

After the war, that one comfort was gone. Civilization was burned down, her friends gone, all hope lost. Mars wasn't a great place to live, but Ares/Mars had insisted 'just for the hell of it'. Typical Olympian behaviour.

A few of the minor gods were foolish enough to side with the humans. That ended up well - now they're all trapped in a torture chamber.

'Life is only precious because it ends', something that all gods told their children.

'No need to emphasise that,' Annabeth thought angrily.

She had been walking on the other side of Mars from the gods, alone, then encountering water.

Just her luck; someone else was already there.

Percy

Whoops. How did this super-cute spirit / goddess manage to get here already? He hadn't planned on battle yet.

She looked at him expectantly. 'You a god?'

Play along. 'Yeah.. Roman version. You too?'

She hesitated, confident image faltering for a moment, then nodded. 'Athens bestowed my wondrous might.' Her fierce, grey eyes asked for a response.

She looks like Annabeth. 'Dost thou wish to bathe in sacred water?'

Blinking, she frowned. 'Some of you still talk like that?'

'Gods, no.' he laughed. Whoops count: 2.

She bent down to drink. He frowned. 'Since when did goddesses need to drink?'

'Since forever!' She replied slightly angrily. Whoops count: 3. This isn't going well. Pack up and leave?

'Well, do you want some privacy?' he asked. She smiled mischievously and he caught the wicked glint in her eye.

'Don't mind.' She shrugged, trying to look careless. Percy returned the easy grin and stepped forward. 'Supernova?' he asked.

'No, it's better like this.' Whoops no. 4 averted. 'Come in?'

I'll probably get caught when I don't satisfy her stupid godly needs.

He recognized her face. The nineteen year-old knew this goddess from somewhere.

'What art thou sphere of influence?' he queried, making her laugh. She's hot. Maybe this wouldn't be so bad after all.

She began to slip her top over her head, but he paused. 'Annabeth?'

She looked at him and stopped, probably thinking how to kill him best. 'Yes?'

'You're not a goddess...'

'Who cares?' she smiled nervously. 'Come on in, some god warmed the stream up.'

Dead girlfriend comes to another planet and pretends to be goddess. She nearly strips. Perfectly normal.

Something dawned in her eyes. 'Percy?' She asked in disbelief. 'Oh my gods, it's you! Percy!'

'Excited to see me, huh?' Percy smirked in his cocky way. 'Wise Girl, no, it's Percy's identical twin, Perachel, who sometimes switches with Percy's life. Duh, it's me.'

At the slightest mention of Rachel, Annabeth glared. 'Did she... did she make it out?'

Percy shook his head. 'Poseidon granted me a free pardon for eternal torture. Favourite son and all, complete angel... Athena do the same for you?'

Annabeth paused. 'I ran away.'

'You're good at that.'

'I guess I just couldn't take it anymore - my entire mortal family killed before my eyes.'

'Poseidon brought Manhattan down with a huge tsunami. You know what my mom's final words were?'

'Percy... go?'

'No. "AHHHHHHH!"'

The blonde daughter of Athena laughed despite herself - it was a sad, sympathetic laugh, but a laugh nonetheless. It was, on the other hand, a clear, happy thing, and it had less place here than it did back in Tartarus.

'Go, drink,' Percy gave Annabeth a sideways smile. 'Must be parched.'

'Indeed,' she replied, not seeing his troublemaking grin. She bent down again, this time not trying to yank her shirt off, and reached in.

A huge wave caught her as she drank and she shrieked and scrambled back, terrified. Another one came out of the stream and drenched her fully, and Annabeth fell back to the sound of Percy laughing hysterically.

'That,' She fumed, 'Was not funny.'

'Just a little?' Percy pleaded.

'No.'

'Yes.'

'No.'

'There's school tomorrow. No late nights, no getting drunk.' Percy reminded her.

She grinned at Percy's joke. The blonde could barely imagine going back to Goode after all this, finding it in flames and still going to school. Her smile dropped for a moment, then returned when Percy noticed it and remarked, 'I could take over as principal.'

Annabeth frowned thoughtfully, and said, 'No, I think you have too much of a fishy brain. Too suspicious to be a principal - I'd be better.'

'Too fishy? Kelp, seaweed, now I'm a piece of seafood?'

'Yep.'

'Fun,' he replied, 'And now let's go over a plan.'

'You start.'

'Okay. Well, uh, first, I think, um, maybe we should, uh, I-'

'Nice try,' she told him, 'Now my go. We should take turns sleeping, keep watch, and maybe scout for more demigods. You fought Ares yourself. We could stand a chance against a minor god or goddess. We can improvise.'

'Improvising sounds good.' Percy agreed, 'But I got lucky with Ares. What's the point of keeping watch - won't we die anyway, asleep or alive, if a god or goddess finds us? Rest of plan sounds good.'

'If we see them from far away, we can move camp. Just wait. Listen to the daughter of wisdom sometimes.' she explained.

'What if,' a slightly Spanish, mainly American accent said, 'You don't see them from far away?'

Percy whirled round, ready to defend the terrified Annabeth. Had a god found them?

I'm not going to do another chapter until someone says I should. Can you guess who the new person is? (Hint: demigod)