On the twenty first, will probably be 22 years because the accident wherein 11 folks, together with kids who visited the fireworks show, died on a pedestrian bridge in Akashi City, Hyogo Prefecture. Akashi City, which hosted the fireworks show, held a coaching session for brand new workers to show classes to stop a recurrence.
Source
22 years after the Hyogo Akashi pedestrian bridge accident Training to convey classes to new metropolis officers | NHK
