Seashell Treasure Chest
Treasure Chests of course hold Treasures and they are found all over Nippon some in the strangest places. Each treasure chest has a preset piece of treasure in it, these can be rare pieces such as a Stray bead or an Issun's Masterpiece or just something that can be just be bought like a Mermaid Coin. After the contents has been collected the empty treasure chest stays there.
 Accessing them
Treasure Chests come in three types, actual chests, pink shells and Konohana Fruits. The pink shells being found in underwater locations around Ryoshima Coast and the Konohana Fruit appears on the tree every time a Guardian Sapling is revived. There are even slight variations between regular Treasure Chests, such as the ones in Sasa Sanctuary which are designed as ornate red boxes featuring a crest. Some Treasure chests are exposed and ready for opening straight away but others will only appear after certain tasks have been completed, such as clearing a Demon Gate or blooming an area.
A lot of Treasure Chests can only be found at night, you can see them because a beam of light will shine on them. They will be buried in the ground so you must dig them up. However these chests can be found in the day time if you know what to look out for. If you look carefully you will see a small golden handle sticking out of the ground. Most of them will be hidden in the middle of a triangle of grass clumps so if you ever see this you should Power Slash the grass, dig it up and then headbutt the chest to open it.
Chests that are out of reach such as being on an above ledge or underwater should be Power Slashed to open them. Underwater treasures will always float to the top of the water however if they are not collected in time they will return to their chests. The same goes for overhead treasures however they will not always fall to the ground and a Lucky Cat will not draw them in.
 Protected Chests
Chests that are not hidden from view are often protected by a visible block. They cannot be opened until there protection has been removed with the proper Brush Technique. Most of the protections will hurt Amaterasu and Chibiterasu if they touch them.
Leaf Pile: Blow the leaves away with Galestorm. Most of the chest will require a second step such as digging the chest up or quenching flames on the leaves. Afterwards the leaf pile will return but the corner of the empty chest will stick out.
Flames: Blow them away with Galestorm or quench them with Water Spout.
Ice: Melt the ice with Inferno.
Hand Monsters: These appear in the Sunken Ship and you should use Rao's Prayer Slips or a Brush Technique to kill them. They can be avoided though if you Power Slash them from far away. They have a slight glow to them.
Electric Lock: These are found on Oni Island and will only open if Thunderstorm is used on them from an Electric Key. There is on in Sei'an City that will only open with the Secret Brush Technique Thunderbolt because of the lack of an electric key. In Okamiden they are found on Thundercloud, however the also cannot be opened until Thunderstorm is learned.
- In Okami there is one Treasure Chest that cannot be opened because it is an item. If you Bloom the area where you first get swallowed by the Water Dragon a Treasure Chest will appear. You need to bring this to Urashima and he will give you a Stray Bead. The chest cannot be opened because it is meant to be a Tamatebako.
- The plant Treasure Buds are based off is the hozuki plant (Physalis alkekengi).
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