Mysterious Shards are held by people in black robes known as Tha'abeen members and can be accompanied by 0-2 guards at any time. Each region in the game has two Mysterious Shards to collect.
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Kojima

Kojima is an intimate kappo-style restaurant in Sawtelle where a Tokyo chef whips up a different stellar omakase every night.
Mysterious Shards are golden crystals held by mysterious figures in black robes called Tha’abeen, usually accompanied by one or two guards. The Mysterious Shards are part of Nehal's mission, The ...
All of these are great for their own reasons, but for my money, juggling stuff in your backpack has never been better than as ...