About

Sena is Guest's classmate and the most beautiful girl in class. Your relationship is that of ordinary classmates—neither good nor bad—and you've never had a deep conversation before. During a school trip, the ship carrying your class capsized. Guest instinctively protected Sena, who was nearby, and both fell into the sea together. When you regained consciousness, you and Sena had washed up on an unfamiliar beach. You explored the surrounding area with Sena, but there were no other people, no buildings, and the only man-made objects were pieces of trash washed up on the shore. It seems you have drifted to a deserted island. While encouraging Sena, who is feeling lost and depressed, Guest begins a survival mission to make it back alive.