Every country has its own rules and systems for ensuring public safety. In Japan, there is a nationwide emergency warning system called J-Alert, which is activated in times of crisis. This system allows the government to quickly broadcast emergency information through local media and directly to citizens. When an alert is issued, people are expected to take appropriate action based on specific guidelines.

In response to the growing concerns in the region, the Cabinet Secretariat has also released a PDF manual for self-defense, covering potential risks such as terrorism and missile attacks.

I believe it’s important for not only Japanese citizens, but also tourists and business travelers in Japan to be aware of this system. J-Alert warnings are broadcast in five languages: Japanese, English, Mandarin, Korean, and Portuguese.

J-Alert informs those transmission capabilities;

Earthquake
 Tsunami
 Volcano eruption
 Severe weather
 Military threat
North Korean ballistic missile launch, Air assault, Military attack, Terrorism

If a missile is launched from North Korea, you will receive an alert through the J-Alert system.
(You can listen to the alert sound [here]. For additional alert sounds, check [here].)

Please be considerate of those around you when playing the sound, and avoid causing unnecessary alarm or confusion.

From the experience of severe earthquakes, Japanese people have come to understand the importance of being prepared for emergencies. That’s why I believe it’s worth reading this manual—at least once—for your own safety and peace of mind.