Game of thrones (self insert)

Jay was your average teenager like watching tv

show and playing games and one day when he was

playing on his phone while crossing the road he got hit by a truck out of nowhere his death was a fast one and all he could think of know was the ending of game of thrones and what happened at the end of the show. when he came to jay was in a dark space an endless void "hello is their someone out there "jay said and then he heard a voice it sounded like a voice of a women but he could not make out the voice "jay congratulations for being the 100000000000000000000000000001 soul that died you get 3 wishes and get to choose where to reincarnate know choice l" the voice sounded so powerful and imposing all jay could ask was "who are you? what are you?and where I'm I?" The only answer he got was " choose mortal I don't have time for your questions"said the voice. Okey for my first wish I wish to have a system that summons military weapons and people to operate them. For my second wish I want to have all my memories of my past life and finely I want to have it he power to summon gun-dam unicorn as for the world I transmigrate I want to go go to game of thrones one month before the plot starts.voice" as you wish human know good luck on you journey