Light Novel Time-Space magic goes back and forth between another world and the earth (3) Monster Library

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

It is not possible to select the edition number (first edition, second edition, etc.), with or without band, or contents type. Only when contents are clearly indicated in the title. Thank you for your understanding.
Right before a war between humans and demons? Seiji (30-year-old, SE) manipulates space-time magic and realizes that behind the conflict between the Kingdom of Doreados and the demons, an army of orcs is lurking. In order to stop the war, with Elena, the princess of the Kingdom of Doreados, and Lilla, the nobleman's daughter, can he protect the city of イケブ, which is being targeted by a large number of orcs? This is the third popular fantasy from "Let's become a novelist".