Rick Riordan 
9 From the Nine Worlds [EPUB ebook] 
Magnus Chase and the Gods of Asgard

An all-new collection of short stories from the world of Magnus Chase!Travel the Nine Worlds with your favourite characters from the world of Magnus Chase in a brand-new series of adventures.Find out why Amir Fadlan hates clothes shopping in Midgard, see how Mallory Keen learns in icy Niflheim that insulting a dragon can be a good idea, and join Alex Fierro as they play with fire (and a disco sword) in the home of the fire giants, Muspellheim.But watch out for Thor, who is jogging through all Nine Worlds so he can log his million steps — and is raising quite a stink . . .