The product is a collection of English light novels titled "How Not to Summon a Demon Lord" by Yukiya Murasaki. This series falls under the genre of manga and follows the comedic misadventures of a demon lord summoned by a girl to become her servant. The light novels are not graded and are not signed, providing fans with an authentic and unaltered version of the story to enjoy. With all the volumes in the series included, this collection is perfect for those looking to dive into this entertaining and witty tale.