This is what my wife & I could remember that we've read to the kids in the last 12 or so years. We take turns picking which book to read.

Dragon. Without a doubt and without hesitation. I probably would have said that before narrating so many, but 'scales' have tipped.

The ending was also bittersweet & the separation of friends, mentors, and a good many other things that I don't want to get into without spo