Maiden's Bookshelf #1

Plot

Two young siblings left to survive on a deserted island, waiting for the rescue that may never come. They find joy in the wonders of their own personal Eden—until "the demon" shakes their faith and leads them down the path of temptation...

Told through a series of letters sealed in bottles and thrown out to sea, Kyusaku Yumeno's classic is just as harrowing and immediate today as when it was first published in 1928.