One black umbrella and one red umbrella.
The conflict between the British government and the Ministry of Magic.
Grindelwald was defeated by the greatest white wizard of this century, and the remaining parties were further eliminated.
Margaret Blake, a young red-haired witch is already the deputy director of the Department of Magical Accidents and Disasters. During the war, she was a battle-hardened Oro. After the war, the ruined Ministry of Magic was in urgent need of reconstruction. Young warriors replaced their elderly elders and became the mainstay of the Ministry of Magic.
Post-war London was shrouded in fog, both in the wizarding and Muggle worlds. Grindelwald's remnants fled to the Muggle world, trying to recharge their batteries and plan a counterattack. The Ministry of Magic had to start cooperating with the Muggle government, and half-blood Margaret took over the job.
For the first time, Mycroft Holmes, the head of the British government, had to accept the concept of "magical world" that transcended science... However, how could he allow something that he could not control to appear in Britain?
This is a collaboration between red and black, and it is also a contest between red and black.
Purpose: Peace