Luchiru is a Majin who lives beneath the surface of the earth. He was sent to the surface of the earth as a Spy to gather information in order to defeat the humans living on the surface.
But the problem is Majins have a different understanding about Humans, they strongly believe that the Human Race is far more superior than the Majins in every sort of way, but in fact it is the other way around. How would Luchiru survive in the Human World where he has a different point of view on the strength of Humans, where he strongly believed that just a touch would make him combust and be disintegrated in an instant?!