Crisis Core Reunion - Sephiroth 1 - Hard Mode - Assault Twister+ and Jump

AT+ and Jump method. I also had Darkness equipped in case he summoned the elemental crystals, but they never appeared. This might be due to me interrupting both his ability and Heartless Angel, but I am not certain.
Part 2 of the Sephiroth fight(from a different run, but the same setup) • Crisis Core Reunion - ...