STEP 1: GO BACK IN TIME TO KILL HIM (AGAIN); HAVE A DEAD BODY?
HERE ARE SOME STEPS TO FOLLOW; STEP 3: HE COMES BACK TO LIVE BECAUSE IT'S THE TIME HE GOT KILLED IN THE REAL WORLD; STEP 2: SHOW YOUR FRIEND; STEP 4: HE'LL DIE AGAIN BECAUSE IN THIS WORLD IT'S NOW THE MOMENT THAT YOU ENTERED THIS WORLD, SO NOTHING HAS CHANGED EXCEPT THE FACT THAT NOW SOMEONE KNOWS THAT IT WASN'T YOU WHO KILLED THE GUY; STEP 5: YOU JUST DESTROYED THE TIMELINE OF THIS UNIVERSE. YOU ONLY HAVE 5 YEARS UNTIL THE MASSIVE EXPLOSION OF TIME REACHES THE MILKY WAY