Please check this out for details.
With Gold Shard Purchase, you can purchase in-game currency by purchasing in-app items.
For example, if you purchase "600 + 120",
720 gold shards
720 soulstones
is given.
Purchase information is linked to save data.
Therefore, if you delete your account, your purchase history may be lost.
If you lose the account that holds the purchase information due to reinstalling the app, etc., please try to restore it from save data manager.
We are now offering the ability to transfer any remaining gold shards you have in Buriedbornes 1 to the sequel, Buriedbornes 2.
If you have any other questions, please check the explanation page on the official website.