When does Fiction become Misinformation become Truth?

[Coss]

I guess we'll know on July 5.

A Japanese manga claims a natural disaster is imminent. Now, tourists are canceling their trips

excerpt: 

...  a travel agency based in Hong Kong, said bookings to Japan dropped by half during the Easter holiday and are expected to dip further in the coming two months.

The speculations have scared off mostly travelers from mainland China and Hong Kong, which are Japan’s second- and fourth-largest sources of tourists, respectively. But the fear has also spread to other markets such as Thailand and Vietnam, where social media platforms are overflowing with posts and videos warning people to think twice before traveling to Japan.

Anxieties provoked by these prophecies have, according to Yuen, become “ingrained.” He added that “people just say they want to hold off their trip for now.”  ...