OK, what the hell is with everyone and killing these damn Forerunners? Personally, this is what I reckon...
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We have all seen the trailer, right? So, he's going towards a Forerunner world/ship/thing aaand so he might have to do crap. Sound good?
forerunners disapeared a long time ago they disapeared after the halos went through the portals the flood came only 1 forerunner escaped Bornstellar makes eternal and he is with the librarian