Sorry for butting in on your thread but to beat Sephiroth, you need to stay close to him at all times, guard his sword attacks and attack constantly. DO NOT LET HIM USE SIN HARVEST, either attack him while he's casting or if ur too far away use Ragnarok, it makes you become invincible for the duration. Keep a Megalixir handy if worst comes to worst. Keep Aeroging and Curing. Avoid the rocks he spews, and when he turns blue, don't worry, keep attacking until dead.