The Tragedy of Hope's Peak Academy

The Tragedy of Hope's Peak Academy or Hope's Peak Academy's biggest, most awful event (希望ヶ峰学園史上最大最悪の事件) is the name given to the very first Mutual Killing game caused by Junko Enoshima.

It is not to be confused with The Tragedy, the world-wide event that happened later and which was triggered by The Tragedy of Hope's Peak Academy.

History
Junko, in her desire to spread despair, forced the Student Council of Hope's Peak Academy into the first known mutual-killing game, which killed all the participants but Izuru Kamukura and the heavily wounded student council president Soshun Murasame. The events were broadcast to the reserve course, greatly upsetting them - in their view, the academy had apparently spent the exorbitant fees they had paid to "create" murderers.

The reserve course then rebelled and protested, not knowing that they were being led and agitated from the shadows by Junko and her organization, Ultimate Despair. This social unrest soon became a movement that spread outside the academy's walls, with people everywhere protesting against the wealthy and talented. The movement soon engulfed the world, becoming more violent by the day, eventually creating the major event known as The Tragedy.