On a certain day, a freshly graduated young man with a promising future ahead suddenly decided to walk out of his privileged life by becoming an adventurer and to travel to America via cruise liner. However, upon crossing the Atlantic ocean, the liner where this certain young man was faces the storm, and while every other passenger was able to evacuate successfully, he himself failed to keep up with the rest of the group and got left behind. As a result, a young man finds himself on a tropical island... with the mysterious otherworld creature dwelling within its depths. 
Who is this young man and what exactly is this creature? What's burdening them? Will they be able to find common ground with each other and make it out alive?

*The story is in progress