A lady who calls herself a demon appeared earlier than a timid scholar named Fumio Kijima. The lady claims to be a marketing campaign lady from the demon world and he or she provides him the power to “summon a room” from nothing however skinny air.At first he doesn’t abuse his energy and makes use of it as a handy capacity in his on daily basis life. However in the future he's bullied by his classmates below a false pretext and is made to endure. Prior to now he would have wallowed in distress and cried himself to sleep, however now he had an influence to name upon.“I'll make them remorse it!”Utilizing his powers to summon his “room”, he begins his period of confinement and brainwashing to realize his targets