Mega earthquake fears have hit Japan after a manga comic predicted a 'real catastrophe' there this summer.

In 'The Future I Saw', a comic published in 1999 by Ryo Tatsuki, a huge quake prompts scores of tsunami waves to engulf the East Asian country in July 2025.

Many believe Tatsuki's warnings should be taken seriously after she has reportedly accurately predicted other natural disasters, including the Great East Japan Earthquake and tsunami in 2011.

Her grisly forecast has fuelled social media posts urging people to stay away from the nation and is thought to be the cause of a dramatic drop in the number of holidaymakers planning to visit this year.

According to a Bloomberg Intelligence analysis of ForwardKeys data, airline bookings from Taiwan and South Korea have fallen since April, with the number of Hong Kong flight bookings being roughly 50 per cent lower than last year.