Due to a series of games, Sean accidentally traveled through time.

"Are you saying that Miss Granger walked into your room the night before yesterday to report the Ministry of Magic's financial report to you?"

"Yes."

"Are you saying that Miss Lovegood walked into your room last night because you found the harassment fly?"

"That's right."

"Are you saying that Miss Qiu Zhang will come to your room to practice Quidditch later?"

"That's right."

"Are you saying Clearwater, Bones, Greengrass, Delacour, Nymphadora..."

"Please allow me to interrupt you. I will clarify here for the last time that these... are not rumors."

Looking at his special golden finger, Professor Sean, the greatest wizard in history, the acting principal of Hogwarts, the recipient of the Order of Merlin, the first-class medal, and the acting Minister of the British Ministry of Magic, issued an official statement to all walks of life: Let wizards be great again!

This book is also known as: "Wizard Training Plan" and "Educating Wizards, Obligation"