Species 9: Everyday Life with Threatening Letters

After credit Beastiary
Ogres and their sub-species.
 * Red and Blue Oni
 * Trolls
 * Gigantes

Trivia

 * This episode is based on Chapters 18 and 19 of the manga series.

Differences from the Manga
Chapter 18:

Chapter 19:
 * In the original Manga, Draco could not fly. While in the anime she flies to escape Kimihito and Miia only to be shot down and captured by M.O.N.