Pretty sure it is just an illustration. If I remember correctly, Hertz uses unrelated illustrations for their covers.
ya it's an illustration...which is a pity...a good manga could have happened
Furanosuke Inariya's artwork ... hmm, maybe her Monster Hunter doujinshi?
Only because of the armour.
The illustrator of this cover is Inariya Fusanosuke.
awww soo sad T.T
Thanks for your replies!!
Here's the cover:
http://www.mangago.zone/read-manga/aiso_tsukashi/mf/v01/c003/4/
Much love and thanks!! <3