9 from the Nine Worlds
Rick Riordan
Magnus Chase and the Gods of Asgard (5)
Hotel Valhalla Guide to the Norse Worlds: Your Introduction ...
Magnus Chase and the Gods of Asgard (4)
Neverseen
Shannon Messenger
Keeper of the Lost Cities (4)
The Son of Neptune
The Heroes of Olympus (2)
The Red Pyramid
The Kane Chronicles (1)