Do you have a singular long lasting hyper fixation?

So I just thought about this, and thought, we'll surely others with adhd might have something similar going on.

I have this one fixation that I've had for years, reading... Yes reading, I know that I have different fixations in reading like Harry potter fanfiction or regular books or something else.

But reading is the general view for me, I've been reading nonstop for like 7 years straight with no breaks other than regular life activities.

So, what's your singular long lasting hyper fixation?