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Dark Maelstrom (ダークメイルストロム, Dāku Meirusutoromu?) is a technique that appears in Kingdom Hearts Re:Chain of Memories. It allows Riku to unleash a powerful spinning attack with a pair of energy blades that rushes the enemy, followed by a powerful upward slash with the two swords combined.
Learning Dark Maelstrom
Kingdom Hearts Re:Chain of Memories