"Knock, knock, knock..."
The crisp, rhythmic knocking interrupted Klein's thoughts. He practically sprang off the bed at once and had the servant puppet Enzo go answer the door.
The instant Enzo's hand gripped the doorknob, an image surfaced in Klein's mind. Before the door even opened, he had already seen the person standing outside.
"Mr. Devil? Why was he here?" Klein froze slightly, momentarily wondering whether this was real. Without further hesitation, he sorted through his thoughts almost instantly. As he followed the Spirit Body Threads to seize a rat in the hotel as a puppet, ensuring that he could flee at any time, he walked toward the door and had Enzo open it.
"Good evening, Mr. Devil." Seeing the man at the door with a black cat perched on his shoulder as usual, Klein waved in greeting.
Yet for some reason, meeting this gentleman now felt rather strange. Well, it was probably like—"Your ancestor and I were roommates in bunk beds. By seniority, you should be calling me Great-Grandpa."
"My friend, you look terrible." Sno looked at Klein, and the smile on his face slowly vanished, replaced by a serious expression. His brows furrowed slightly as he said solemnly,
"Did something go wrong with your advancement to demigod?"
"No." Klein immediately shook his head. He led Sno to the table, had Enzo brew a pot of tea, and only then asked,
"Mr. Devil, how did you know I was here?"
"You've specifically studied mysticism to some extent, haven't you? The essence of a charm is sacrifice and bestowal. You sacrifice metal inscribed with magical runes in exchange for the power of the being you sacrifice to. Truly great existences automatically respond to countless charms every day, so naturally they wouldn't pay attention to any particular one. But after becoming