Writhing

Dark (うごめく) is one of the materials in Kingdom Hearts II used in Item Synthesis. Solidified fragments of Darkness, the Dark materials are fairly easy to obtain, especially in their smaller forms. Dark was assigned the color black to distinguish it from other materials, especially the Dense category. Dark is also one of the eight materials that has Shards, Stones, and Gems available for purchase once certain criteria are met.

Drops

 * Dark Shard: Shadow, Soldier
 * Dark Stone: Assault Rider, Nightwalker, Bark Hound
 * Dark Gem: Gargoyle Knight, Gargoyle Warrior
 * Dark Crystal: Air Pirate

Purchase

 * Dark Shard: Collect 30 to open in the shop for 100 Munny.
 * Dark Stone: Collect 25 to open in the shop for 200 Munny.
 * Dark Gem: Collect 20 to open in the shop for 400 Munny.