Isekai Maō to Shōkan Shōjo no Dorei Majutsu (Manga)

This is the manga adaptation of Isekai Maō to Shōkan Shōjo no Dorei Majutsu.

Chapters not yet in tankōbon format
Demon Lord and Demon Lord I Demon Lord and Demon Lord II Demon Lord and Demon Lord III 

Links
Nicovideo (manga)  