Elma’s Erotic Sleep Training

At the most prestigious magic academy, there is a genius girl by the name of Elma.
Too bad that everyone considers her field of study, Magic Archeology, to be worthless.
For a change of pace, she heads to the eastern lands to meet her master but,
along the way a mysterious storm wrecks her ship and the two of you end up adrift
in the ocean currents…
A strange isolated island with weird settlements.
Ancient ruins and an elusively appearing / disappearing girl.
and the protagonist (you), a stuffed bear…?
Can Elma figure out the secret to the ruins and escape the island?