Piper was shocked. She didn't expect Percy to sacrifice himself to save Annabeth. She would have expected him to do what anyone else would have done. Run away. This just goes to show how much she didn't know him.

Jason was guilty. He knew that he had the chance to save Percy from falling, but was to scared of what would have happened to himself if he did try. After Nico said that there was a chance that he would fall in to, he panicked at the thought, but made it seem like he was agreeing with Nico.

Leo didn't know how to feel. He knew he should feel sad or upset that one of his friends just fell into Tartarus, but he didn't. So he kept working on the Argo. Fixing it, updating it. Working on something that would help them all eventually.

Nico was worried. He had gone through Tartarus himself and had come back scarred. That was also with him being a son of Hades, which helped lessen the effect that place has on people. He had no idea if Percy would make it out alive. And if he did, there was no telling how his mental state would be. The only thing they could do was wait.

Frank was confused. He knew that Percy was loyal to his friends but he didn't think that he would risk himself just to save one person, girlfriend or not. It didn't make any sense, so he tried not to think about it too much.

Hazel was concerned. She saw how Tartarus affected her brother and didn't want anyone else to go through that. She tried to think that everything would be okay, but it kept getting harder to do that. So Hazel could only wait and see what would happen.

Annabeth was indifferent. She and Percy had been going through a rough patch lately and she didn't want to keep acting like she liked him. So she didn't, all Annabeth had to do was convince everyone that they don't need the son of Poseidon. After all, they had her, didn't they?

The boy looked around the area he was in. The majority of the land was a rough terrain made from red rocks and black shards of glass. He looked to the sky. It was covered in a thick red fog, but beyond that was black.
He turned in a circle, looking for any signs of life. He found none.

Picking a random direction, the boy started to walk that way. Turning his back on the pair of black, soulless eyes that watched him.

Nyx looked at the boy that had just come out of the river Lithe. She was interested in him. After all, it's not every day that the demigod who defeated the Titan King comes to Tartarus.