Excerpt from the book "Demonic Hearts":
...After visiting the territories of Beelzebub, also known as Beelzebub of Gluttony, I headed toward the territory where the nearest True Demon lived.
Where did I go? I went to the territory of Belphegor of Sloth.
To be honest, I hadn't heard much about that true demon.
Especially when I asked Lord Beelzebub about Lord Belphegor.
He didn't give me a clear answer.
"The Sleeper"
That was all Beelzebub said; he didn't sound either approving or disapproving when he spoke of Lord Belphegor—rather, it was as if he were addressing an equal.
I won't deny that my curiosity piqued a little.
Although the journey was long, I made my way step by step, first venturing into a desert...
After a rather long trek, I arrived at a vast plain with three gray mountains equidistant from a city that stood right in the middle of the plain.
At first glance, it was a fairly peaceful setting.
