The voice was very deep and held absolutely no malice or deception meaning it couldn't be Beelzebub. Well, it could be some kind of grand scheme of his, but everything just seemed too far apart from each other that I could only wonder what he would gain from this. Didn't he want me to lose my mind down here? In addition, there were the panels that followed after, reinforcing the idea that this wasn't just some grand scheme made by that asshole.
Although it was a harsh request given by some unknown being, I could tell that being was strong. I could instantly tell that if I followed this voice, an unsurmountable amount of power could be granted to me. And hopefully, with a good teacher, a chance to evolve could follow right after.