Nandala Gandala

The Nandala Gandala is a sacred book said to contain a ritual for getting back one's possessed body.

Reality
In reality, the book is simply a book with mostly blank pages in it, with "U-Turn" written on a single page by future Yuta when he fails to prevent the impending destruction of humanity. This is an instruction to the discarded spirit Yuta to "U-Turn", by traveling back in time to December 21st, and pushing his own spirit of his past body, thus becoming "future Yuta" himself. He would then go on to attempt to do what the previous Yuta couldn't. This was done in a continuous time-loop for 6,373,153,740 interactions of Yuta. It would finally be with loop #6,373,153,741 that the timeline would diverge from this; This variation of 'Future Yuta' would manage to prevent humanity's destruction, however he died in the process. Discarded Yuta then voluntarily went traveled back to December 21st without the book, to begin loop #6,373,153,742.