Was all the source material from the Zetsuen no Tempest manga adapted into the anime? Was all the source material from the Zetsuen no Tempest manga adapted into the anime? I could check myself but I'd rather avoid spoilers.
According to Baka-Updates:

Starts at Volume 1, Chapter 1
Ends at Chapter 44 with some differences 


Manga has 50 chapters and additional materials (Guidebook)