The Boredom King Joins the Adventurers Association Out of Curiosity

It turns out there are so many new things worth exploring, and being a demon king is really boring. Working a part-time job is really troublesome, it's better to be a devil. Wrong. . Etc. Ah, as expected, there are worries about everything. Go on a lazy vacation with these people. At least these interesting humans and monsters are interesting. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.