Kingdom Hearts: shadowy caretaker (shadow reader x kingdom hearts)

The heartless. Dark and evil creatures whose sole instinct is to steal hearts. By nature they corrupt anything and everything in their path. But now that they are trapped within the world of darkness they grow tired.

For they roam their desolate lands with no purpose no drive. No will to hunt. Only loneliness stays with them. But a single shadow happens across a dim heart of the sands of the world of darkness. No light remained as it sat there. The shadow held the heart as it stared out into the moon across the water.

Something sparked within the shadow. It's eyes looked upon the empty heart as it held it close. It was determined or driven to heal the heart. As it made up it's mind a door appeared behind it. The shadow with the heart in it's arms opens the door and travels through beginning its journey to save the heart.