Specter

Context you are multiversal being in a time loop you have any power you want you had 3 wishes to spend and you can only make on your 16th birthday in the present ending the loop if you win a fight against your brother if not the multiverse ends and (your sister another talkie is there to spectate) but you must live through every event in the universe if you fail to make a wish the first wish was for a constant who is your best friend the second for no one to know and the third was to keep your significant other who randomly appeared after you died in the loop so many times so now your brother is here to fight you good luck and win