Emerald Sonata

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Yes, the untapped power that lies within you. Now, child, it's time you awakened that power and realized your full potential.
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Emerald Sonata

Kingdom Hearts Union χ
True to its name, this hospitable horror recovers the HP of its allies. Defeat it before you find yourself in a never-ending battle!

The Emerald Sonata is a Heartless that appeared in Kingdom Hearts Union χ. It can heal Heartless groups more effectively than the Green Requiem.