Hungry

Hungry, also translated as "Mystery" and "Serenity", is a material type introduced in . Hungry materials contain the essence of fulfillment, and are colored gold.

In Kingdom Hearts they are used as normal synthesis items, while in Kingdom Hearts II they are "modifier" materials that can be added to a recipe of the same rank to upgrade it to a more powerful form (though some recipes cannot be upgraded through this method), and are usable once the moogle reaches level 3, Junior Moogle. In Kingdom Hearts II, once all Serenity materials are obtained the moogle will reward Sora with a Magic Boost.

Design
Hungry materials are represented by jewels with a Modifier material structure. The jewels are an opaline mixture of many colors, but gold is the most prominent. A light blue, smoky glow is present on each jewel.

"Serenity" means "calmness" or "peacefulness". The material's original English name, "Mystery”, may simply be a translation error, as "mitasareru" is phonetically similar to "mystery".

Kingdom Hearts

 * Mystery Goo (満たされるしずく): Black Fungus (20%), Rare Truffle (20%/40%/100%), White Mushroom (10%/20%)
 * Serenity Power (満たされるチカラ): Pink Agaricus (10%/20%/100%).

Kingdom Hearts II

 * Serenity Shard: Assault Rider (4%), Creeper (2%), Fat Bandit (4%), Graveyard (4%), Hot Rod (4%), Large Body (4%), Toy Soldier (4%)
 * Serenity Stone: Crimson Jazz (4%), Devastator (4%), Dusk (2%), Living Bone (4%), Morning Star (4%)
 * Serenity Gem: Dancer (4%), Dragoon (4%), Gambler (4%), Sniper (4%)
 * Serenity Crystal: Assassin (4%), Berserker (4%), Samurai (4%), Sorcerer (4%)

Kingdom Hearts II Final Mix

 * Serenity Shard: Assault Rider (4%), Beffudler, Camo Cannon, Fat Bandit (4%), Graveyard (4%), Hot Rod (4%), Iron Hammer, Large Body (4%), Toy Soldier (4%), Bulky Vendor (100%)
 * Serenity Stone: Aerial Champ, Aerial Viking, Crimson Jazz (4%), Devastator (4%), Lance Warrior, Living Bone (4%), Magic Phantom, Morning Star (4%), Necromancer, Bulky Vendor (100%)
 * Serenity Gem: Mad Ride, Reckless, Runemaster, Spring Metal, Bulky Vendor (100%)
 * Serenity Crystal: Bulky Vendor (100%)

Kingdom Hearts Birth by Sleep

 * Hungry Crystal: Bruiser (25%)-(30%)-(40%), Buckle Bruiser (25%), Hareraiser (40%), Monotrucker (50%)-(40%)-(95%)-(40%), Vile Phial (50%)-(60%).

Kingdom Hearts III

 * Hungry Shard: Earth Core (Tower) (12%), Large Body (8%), Popcat (8%), Vitality Popcat (8%), Magic Popcat (8%), Focus Popcat (8%), Munny Popcat (8%), Chief Puff (Tower) (8%), Beasts & Bugs (8%), Patchwork Animals (8%), Air Droids (8%), Bouncy Pets (8%), Supreme Smasher (8%)
 * Hungry Stone: Earth Core (Tower) (4%), Popcat (4%), Vitality Popcat (4%), Magic Popcat (4%), Focus Popcat (4%), Munny Popcat (4%), Parasol Beauty (4%), Chaos Carriage (12%), Frost Serpent (Tail) (40%)
 * Hungry Gem: Frost Serpent (Tail) (20%)
 * Hungry Crystal: Mechanitaur (8%), Frost Serpent (Tail) (20%), Berserker (18%), Sorcerer (20%)

Kingdom Hearts II Final Mix

 * Serenity Shard: Chest at Agrabah.
 * Serenity Gem: Two chests at Cavern of Remembrance: Mining Area; chest at Isla de Muerta: Moonlight Nook; chest at the Ship Graveyard: Seadrift Row; chest at the Cave of Wonders: Treasure Room; chest at the Graveyard; chest at the Wastelands; chest at the Jungle.
 * Serenity Crystal: Chest at the Mansion: Foyer; chest at the Cavern of Remembrance: Mining Area; chest at the Cavern of Remembrance: Engine Chamber; chest at Pride Rock; chest at the Jungle.

Kingdom Hearts Birth by Sleep

 * Hungry Crystal (Terra): Chest at the Flower Glade; chest at the Ship Hub.
 * Hungry Crystal (Ventus): Chest at the Mousehole; chest at the Hall.
 * Hungry Crystal (Aqua): Chest at the Flower Glade; chest at the Gizmo Gallery; chest at the Launch Deck.

Kingdom Hearts III

 * Hungry Crystal: Two chests at Sandbar Isle; chest at the Breezy Quarter.

Kingdom Hearts II

 * Serenity Shard: Obtain a total of 50 materials; obtain all Rank C materials; chest at the Treasure Room.
 * Serenity Stone: Obtain a total of 100 materials; obtain all Rank B materials; win the Pain and Panic Cup; chest at the Jungle.
 * Serenity Gem: Obtain a total of 250 materials; obtain all Rank A materials; obtain all Dense-type materials.
 * Serenity Crystal: Obtain a total of 500 materials; obtain all Rank S materials; obtain all Twilight-type materials.

Kingdom Hearts II Final Mix

 * Serenity Shard: Obtain a total of 50 materials; obtain all Rank C materials.
 * Serenity Stone: Obtain a total of 100 materials; obtain all Rank B materials; win the Pain and Panic Cup.
 * Serenity Gem: Obtain a total of 250 materials; obtain all Dense-type materials.
 * Serenity Crystal: Obtain a total of 500 materials; obtain all Twilight-type materials; obtain all Remembrance-type materials; obtain all Tranquility-type materials; complete the "Heart" puzzle.

Kingdom Hearts Birth by Sleep

 * Ventus: Collect 40 points in Ventus's Sticker Album.

Kingdom Hearts III

 * Hungry Shard: Obtain at least 50 total synthesis materials.
 * Hungry Stone: Obtain at least 100 total synthesis materials; obtain every type of Material Class Icon C KHIII.png material.
 * Hungry Gem: Obtain at least 250 total synthesis materials; obtain every type of Material Class Icon B KHIII.png material; obtain every type of blazing material; obtain every type of frost material; obtain every type of lightning material; obtain every type of lucid material; obtain every type of soothing material; obtain every type of pulsing material.
 * Hungry Crystal: Obtain at least 500 total synthesis materials; obtain every type of Material Class Icon A KHIII.png material; obtain every type of writhing material; obtain every type of betwixt material; obtain every type of twilight material;

Kingdom Hearts III

 * Hungry Shard: Hungry Shard x3 is one of the possible Prize Postcard rewards.
 * Hungry Stone: Hungry Stone x2 is one of the possible Prize Postcard rewards.

Kingdom Hearts
In Kingdom Hearts, Serenity materials are used to synthesize the following items:
 * Defense Up (1 Mystery Goo)
 * Power Up (1 Mystery Goo)
 * Atlas Armlet (1 Mystery Goo)
 * Ultima Weapon (3 Mystery Goos)

In Kingdom Hearts Final Mix, Serenity materials are used to synthesize the following items:
 * EXP Earring (1 Serenity Power)
 * Three Stars (3 Mystery Goos)
 * Atlas Armlet (1 Mystery Goo)
 * Ribbon (3 Serenity Power)
 * Mythril (1 Mystery Goo)
 * Ultima Weapon (5 Mystery Goos, 3 Serenity Power)

Kingdom Hearts II
Serenity materials are used to synthesize the following items:
 * (1 Serenity Gem)
 * (1 Serenity Stone)
 * (1 Serenity Shard)
 * (1 Serenity Crystal)
 * (1 Serenity Crystal)
 * (1 Serenity Shard)
 * (1 Serenity Shard)
 * (1 Serenity Shard)
 * (1 Serenity Shard)
 * (1 Serenity Stone)
 * (1 Serenity Stone)
 * (1 Serenity Gem)
 * (1 Serenity Crystal)
 * (1 Serenity Shard)
 * (1 Serenity Shard)
 * (1 Serenity Stone)
 * (1 Serenity Stone)
 * (1 Serenity Gem)
 * (1 Serenity Gem)
 * (1 Serenity Crystal)
 * (3 Serenity Gems)
 * (3 Serenity Gems, 1 Serenity Crystal)
 * (3 Serenity Gems)
 * (3 Serenity Gems, 1 Serenity Crystal)
 * (1 Serenity Crystal)
 * (1 Serenity Crystal)
 * (1 Serenity Crystal)
 * (1 Serenity Crystal)
 * (7 Serenity Crystals)
 * (1 Serenity Shard)
 * (1 Serenity Stone)
 * (1 Serenity Gem)

Kingdom Hearts Birth by Sleep
Hungry materials are used to add the following abilities:
 * Treasure Magnet
 * HP Prize Plus

Kingdom Hearts III
Hungry materials are used to synthesize the following items:
 * (1 Hungry Stone)
 * (1 Hungry Shard)
 * (1 Hungry Gem)
 * (1 Hungry Shard)
 * (1 Hungry Stone)
 * (2 Hungry Gems)
 * (2 Hungry Crystals)
 * (1 Hungry Crystal)
 * (1 Hungry Crystal)
 * (1 Hungry Crystal)
 * (2 Hungry Shards, 1 Hungry Stone)
 * (1 Hungry Shard)
 * (1 Hungry Stone)
 * (2 Hungry Gems)
 * (1 Hungry Crystal)
 * (1 Hungry Shard)
 * (1 Hungry Stone)
 * (2 Hungry Gems)
 * (1 Hungry Crystal)
 * (1 Hungry Gem)
 * (1 Hungry Shard)
 * (1 Hungry Stone)
 * (1 Hungry Shard)
 * (1 Hungry Stone)
 * (1 Hungry Shard)
 * (1 Hungry Stone)
 * (1 Hungry Shard)
 * (1 Hungry Stone)
 * (1 Hungry Gem)
 * (1 Hungry Crystal)
 * (3 Hungry Shards, 1 Hungry Crystal)
 * (2 Hungry Gems)

Wellspring materials are used to forge the following Keychains:
 * LV4, 5, 7, 8, 10 (3 Hungry Stones, 3 Hungry Gems, 1 Hungry Crystal total)

Notes and references
Sérénité Freuden