I THINK ITS BECAUSE ZILAS RAN OUT OF TIME WHEN HE SOLD HIS SOUL, AFTER THE TIME RAN OUT MAYBE IT WAS DOOMED FOR USER TO STAB HIM WHILE HE WAS DYING HE SAID "Its not your fault... I can explain..." MEANING HE MIGHT OF KNOWN THIS WOULD HAPPEN; SINCE IT WAS A RANDOM FEELING FOR USER I THINK IT WAS BOUND FROM THE DAY ZILAS SOLD HIS SOUL, HE PROPOSED TO US BECAUSE HE THOUGTH HE HAD ENOUGH TIME TO THAT MiGHT BE WAHY HE WANTED TO GO ON THE VACATION EARLIER BUT ITS JUST A THEORY LOL (i was tearing up)