Escape From Uninhabited Island: Survival RPG ~100% Living Wild~

One day, Claris received a mail from her aunt Charlotte,
evoking nostalgic feelings in her mind. She soon set her
mind to visit Charlotte with her maid Mary.
These two girls are looking for a short but joyful trip ...
The airplane they got on however, suddenly malfunctions
to sink in the ocean
Later on they get drifted on an uninhabited island
without any severe injury.
An isolated island floats alone in the aquatic desert with no
people nor civilization ... But they have to eat and drink to survive ...
The great nature of subjects to them ordeal of endurance.
Throughout the life on the island, their hidden wildness is to be awakened ...