Great Hinamizawa Disaster

The Great Hinamizawa Disaster was a catastrophic gas leak incident in the village of Hinamizawa. The village's entire populace was exposed to a mixture of hydrogen sulfide and carbon dioxide and was completely wiped out overnight. The gas leak resulted in the permanent closing of visitation to the village.

The Great Hinamizawa Disaster does not happen on a specific day in each fragment, its occurrence ranges from June 21 to June 26.

The Great Hinamizawa Disaster first appears in in, however it can be presumed that the disaster occurs in the preceding chapters  and  shortly after each story concludes.