I went to Hogwarts after being spotted by Grindelwald

Headmaster: Gellert Grindelwald
(President of the Wizarding Reform Association, first-class wizard of the Order of Merlin)
to Mr. Sean Wallop.
Congratulations, you have been admitted to Nurmengard School of Witchcraft and Wizardry. Attached is a list of required books and equipment.
The semester is scheduled to start on September 1st. Please return your responses before July 31st. Sincerely,
Vice Principal (female)
Vita Rozier Looking at the second magic school admission notice he received, Sean fell into deep thought… There is a big problem in this magical world…