A bear-defense tool has been developed following a frightening encounter. The incident involved a black shape charging at tremendous speed, leaving no time to escape. Video footage of the event was recorded in a mountain forest.

Further details about the encounter and the tool are available. The event that led to the tool's development was intense and brief, described as 20 seconds of terror.

The source provides more information about the incident and the resulting bear-defense tool, including the location where the encounter took place, described as a northern Japan forest and also associated with Tokyo.