Higemaru Makaijima/Items

Tablets
Three tablets are required in order to read the transcriptions present on the door to Baido's treasure. Without them, you will not be able to open the door. Two of them are guarded by island bosses, but you cannot obtain the third on any island. You will have to find another means to collect it.

Crystals
There are three crystals hidden on three of the islands. If you manage to find and collect all three, you will be treated to the best ending in the game upon finding Baido's treasure.