Sudden Cruelty is an aerial physical Bravery attack for Sephiroth, obtained at the start of the game. It requires 30 CP to equip (15 when mastered), 180 AP to master, has Melee Low priority, and can induce Chase. Sephiroth attacks the opponent with two sword slashes that hits the opponent multiple times.
Sudden Cruelty returns as a Bravery attack for Sephiroth, now requiring 100 AP to master. It is otherwise identical as in the previous game.