"Asta will need to get much more powerful if he ever hopes to defeat the demonic leaders of the Spade Kingdom. Things look bleak, but then a mysterious mage named Nacht appears--and he knows a few things about harnessing a devil's power. Does Asta have what it takes to learn how to control his own devil powers and rescue Captain Yami?"--Back cover.

"First published in Japan in 2015 by Shueisha Inc., Tokyo"--Colophon. Reads from right to left in the traditional Japanese format.