I'm Hogwarts, ah, yes, it's the Hogwarts you know. Don't be too surprised, okay? As a magical world, it is normal for a castle to have consciousness, right?
First-person perspective, the protagonist is Hogwarts, the timeline is roughly from the Big Four to the sub-era, and some parts in the middle will speed up the timeline.
Intent: Participate in the plot as a bystander