With the arrival of the Meiji era and the wave of civilization, superstitions, strange stories, and strange stories were still widespread throughout Japan. From a scientific point of view, Tsugarusotosangun Rokuheita, a philosopher who got the street name of Dr. Youkai while studying to deny youkai. He challenges the mysterious phenomenon in various places to break the superstition with his assistant, Takeshi Tomarise, who truly believes in youkai!