The Man Returned from the Deserted Island

Note: Those who are fond of Japan should read with caution.

Come on, everyone, find the protagonist. I'll make sure you can tell who the protagonist of this book is without getting confused.

A door suddenly appears: "If you go in, will you still be able to get out?"

The secrets of this world, just the tip of the iceberg, are gradually being revealed.

You think it's over?

Wrong. This is only the beginning.