Not gonna go to the trouble of uploading the back for this one since it's just the 3rei logo and nothing else.

Bottom of the back says:
©2016 ひろやまひろし・TYPE-MOON/KADOKAWA/「プリズマ☆イリヤ ドライ!!」製作委員会

©2016 Hiroshi Hiroyama・TYPE-MOON/KADOKAWA/ "Prisma☆Illya 3rei!" Production Committee