One day, a certain city released a video from several decades ago. Finally, humans understood why that explosion occurred, the one that changed all of humanity.,“Master Administrator, I'm Jean from Department 13. I heard that last month a hotel was damaged in the Mid-Tier City, causing the Congress to pay a large sum of money as compensation and even injuring hundreds of civilians. Is this true”,The uniform cap, shoulders, and left chest are adorned with a red swirl pattern, in the center of which is the number 13.。