Omega assassin of chaos (Percy Jackson fanfic)

Should i kill him?? I think i should.

~~~~~~~~LEO P.O.V~~~~~~~~~

We were at camp now. I hated it after Percy told me what happened. Nathan had been teleported from Olympus to camp. I went outside and walked around when I heard him talking about Percy to an Ares child they said.

Nathan:"I'm so glad Percy is gone. I planted those enemy plans and killed his family and he got blamed!!! IM SO AWESOME!!!!!"
Ares kid: "you've been saying that for the past 200,000 years I get it. But you needed my help to kill them you couldn't kill them with out making noise."
Nathan:" I could've done it myself without help.mark"
Me evily says: "you know something Mark and mr. Egotistical douchebag. I was friends with Percy and his family was cool. How bout you two against me in the arena fight to the death."

They agreed and in five minutes we were there getting ready to fight. "What no armor?" They asked at the same time. " Zip your lip get on with the fight already i haven't killed anyone like you in months." I replied and they shut up and got there swords ready. I just lit up my hand with my special fire. I threw it at Mark and he screamed for a few few seconds before he was engulfed in flames and dead. Everyone looked scared except chaos's army they were smiling. Nathan kept on throwing balls of water at me but I knocked them aside. He summoned a 100 meter wave and threw it at me. It hit me and when it went away I was just standing there with purple flames flowing around me. Me and Percy have been watching lots of anime lately so tried something out from a show called dragon ball z. I put my hands to my side and cupped them together so a ball can fit(a/n like in the video).A ball of flame appeared and I shouted. " KAME HAME-!Percy smiled and shouted. " HEY!!! THATS GOKUS THING TO DO FLAMES!! BUT IF YOUR GONNA DO IT AT LEAST DO THE ONE HE DID AGAINST CELL!!!" So I did I teleported to him and stretched out my arms to his face and yelled. " HAAAAAAAAAA!!!!!!!!!" It blasted him and he fell to the ground dead and headless his neck was burnt closed and I walked out like a boss. I shouted. "TEAM FLAMES!!!!" But I felt a blade in my chest I turned around and saw it was Annabeth. My hood fell off and I fell to my knees and slid off the blade into darkness I heard her scream. " Oh my gods I didn't know it was you Leo!!!"