It's an actual story. I liked it okay
I believe those are art
You can visit their website (DP Scanlations) most of the art covers are there.
Also this website has art covers by DP
https://scryren.livejournal.com/photo/album/803/
Do you remember what its called or maybe who the author is?
Its a light novel cover
Is this an actual manga or just art?
http://www.mangago.zone/read-manga/beast_feast/mf/v01/c001/