Rumi is the demon team leader of the Kodama team, which is said to be the strongest in the investigation bureau. However, as a reaction to the fact that he has been forced to do so in the male society of SP, he has hidden the character of a fierce de M woman, contrary to the face of the ostensibly de S scared big breasts SP. Approaching the gap is a mysterious psychological counselor, who cleverly enters the gap in Rumi's mind and is dropped by a radical SM play called aptitude test.