I have played the game through few times and I still wonder,
for what did Sephiroth died earlier? I mean before he was resurrect by Cloud in the Northern crater. So he and Cloud were made/produced pretty much same time and then some time later Sephiroth died. Was it when he tried to free Jenova in Nibelheim reactor or later? Why he was in the Northern crater in that bubble-thing???
Did Shinra had something to do with it?