Ryo Tatsuki, a former manga artist known for her purportedly accurate disaster predictions, has forecasted a mega-tsunami to occur in July 2025. She describes visions of the sea south of Japan "boiling," which she interprets as signs of an underwater volcanic explosion leading to a tsunami three times larger than the one in 2011. This prediction has gained attention, though it lacks scientific substantiation.

The disaster may be natural or man-made. Examples that would count include passenger plane crashes, tsunamis, earthquakes, volcanoes, etc.