future mix up

I woke up with sunlight pouring in through my window, blinding me. I had just realized that my arm was stuck under Annabeth, who was laying in the bed next to me. I slipped my hand out from under her back, and got out from the warmth of the bed.
I headed outside, letting Annabeth sleep. I started to head towards cabin seven to retrieve Annie from the Athena cabin, thankful that Annabeth's siblings decided to let us sleep without having Annie wake us up.
I opened the door to chaos. The walls were stained with a mysterious brown substance, and the beds were thrown around. People were passed out all over the place, while some people were running around, chasing a small, blonde haired devil.
"Annie!" One of the Athena kids yelled. "Get back here!" A small giggle filled the room, and Annie ran by me, tripping over a dresser, falling on her pursuers foot. She howled in pain, and slowly caressed her foot.
"Annie Jackson!" I yelled louder and more menacing than I have ever yelled. Annie stopped dead in her tracks, slowly turning around. There was a look of pure terror on her face.
"Yes daddy?" She croaked.
"Over here. Now." I motioned out the door, and Annie followed. There was a loud sigh from the Athena cabin as I exited. I leaned down beside her.
"If I ever catch you doing that again, you are going to wish you were with your real dad." I grabbed her hand, and carried her over to the Poseidon cabin. As I opened the door, Annabeth was about to exit.
"Oh!" She said, startled. "Percy, I was about to look for you. Was Annie good for my brothers and sisters?" I looked down at Annie.
"Not even close."

I headed to the Hades cabin, on my way to talk to Nico about Beckendorf. I knocked twice, and waited for Nico to open the door.
He didn't. I decided to walk in, as Nico was probably expecting me and left the door open.
I walked in and found something that would scar me for life.

Nico was laying in bed, with Selena next to him, naked.

Notes

OHHHHHHHHHHHHHHHHH CLIFF HANGER! oh wait i'm probrally gonna update before you can say 'persassy'