But think of it as a sequel to "What's This?"
Itachi's 2009 birthday message, ha, it's late, it seems it's not the Gemini month anymore, cough cough cough cough. . .
In short, it is just a description of the so-called paradise world. Well, it is not about time travel or the love between humans and ghosts.
It's called "Sixth" because it doesn't exist. Listen to me hypnotize you: This is the GO ON curse.