Masuda Keima just wants to sleep. Too bad for him, he's been pulled from sweet dreams and comfy sheets into a fantasy dungeon in another world! Not only is he charged with protecting it, but failure to do so will cost him his life. His only guide is the personification of the Dungeon Core, Rokuko-but she's a moron who can't even figure out how to drive away a group of bandits. If Keima ever wants to get some quality shut-eye again, he'll have to take over running this dungeon himself!

(W) Supana Onikage (A) Nanaroku (CT) Youta REI TO THE RESCUE!After pulling out all the tricks he has up his sleeve, Keima has finally discovered Aidi's weakness! Not about to let this chance for victory slip by, he and Rokuko deploy the full might of their offensive forces against her. Yet Aidi's overwhelming power stops them all dead in their tracks, and she advances on Rokuko's core. In the face of overwhelming defeat, Rei steps up to defend the dungeon as this thrilling three-way battle reaches its climax!