Nobita's Musings in Another World

Why did the skulls and wooden boxes that sank in the South Pacific disappear? Why do scattered islands far apart in the world's largest ocean use the same language? Why did unprecedented monsters appear in Nobita's home? If you want to find out, click in = = 1. This is a Doraemon fanfic. 2. It is not anything else. 3. Please read the title carefully. Don't make wild guesses; there's no point. 4. I can't reply because I'm in a tough spot. No one reads the explanations after the chapters, so I can only write this here.