Hades Havrek

Backstory

I was in my house, just waiting to take a shower and i see a little paper on the principal door ¿what was it? i just give it to my mom without care. At the other day my mom tell me it was for me. Who write to me? Is the only question i have in my head while i see my card.
I open in my room, the strange "hogwarts" the card invites me to the school, I was a wizard.