{y/n POV }.
I was on my way back to camp after my mission as I got inside the border I saw them setting up for capture the flag so I went to my cabin aka Poseidon's cabin I changed out of my mission clothes and put on my orange camp shirt with a pair of shorts I put on some blue sandals and walked to the infirmary were I knew will would be when I got there will was putting a helmet on a stack of blue clothes for capture the flag "hey will I'm back" I said as he handed me the clothes "I can tell ... Oh! Also we got a new camper he's name is Percy i think he's with Luke" as he gathered some bandages in he book bag and started to walk to the mystery kids cabin "ok thanks for telling me and tell mystery kid I said hi" I yelled after him as he nodded
[Time skip]
I've been looking for Luke for about 20 minutes now and capture the flag is starting so I decided to change into my blue amour and grab my sliver blue sword and walked to the woods everyone was already fighting and stuff I like to be late I made my way to the river and hide in at the top of a dark tree and watch as annabrat and some new kid fought 'oh that must be Percy' I thought he landed close to the water he was badly injured before Annabeth took a step further I jumped down in front of her and punched he in gut making fall down I put my sword tip to her face which made her freeze in shock I look over at Percy and my eyes widened as he uses the water to heal he wounds he gets up and the sign of Poseidon shows above he's head everyone but me starts bowing to him as he looks confused then Chiron says "Percy Jackson son of Poseidon" as I still stand there thinking one thing 'I have a brother!'