Demons work hard to perfect their craft: devising traps meant to catch adventurers. A clothes-dissolving slime here, a tentacle trap there. To humans these tricks may seem trivial, but each one costs its demon makers real toil. The comedy follows the Demon Lord's underlings as they plan, research and scheme up fresh ways to frighten, hurt and embarrass the heroes on their way to their master. The fantasy comedy is adapted from a manga by Katou Takuji and Gashigashi that began on Twitter.