The archangel Michael my brother will die from the gods!?

Michael left me and Poseidon left you in his castle Aleeza and daughter of Herah. If I kill him won't Percy be angry so yet again I will have to send Michael on Poseidon and all of his children so they can't come after me but every demigod if you are reading this then think about it. Will someone come after me for having the god of the seas dead. Michael the archangel is my brother. Zeus said he would strike Michael dead if he ever came back. Cause in camp half blood I usually sleep in my own cabin and Michael can get through since he is an archangel and he tells me that someone will come after me and he said he will protect me but i have dreams he is going to die but i can't lose michael so do i have luke steal the lightning bolt while michael kills zeus and poseidon?