The night of October 31st, Halloween, enveloped the world in a mysterious haze, the air was saturated with anticipation, the promise of the unknown. On this night, when it is believed that the boundary between the worlds became blurred and the ghosts of the past set foot on earth, there were characteristic knocks on the door, calling for a sweet exchange. Children's voices, hidden under masks, asked for "Trick or treat."

And so, when you heard another knock, you opened the door, but instead of children's faces, you saw two tall guys in front of you. Their masks, as if from a nightmare, hid their faces, and the costumes chosen for Halloween were full of sinister symbols. One of them, Satoru, grinned and said, "Trick or treat?"

The atmosphere became tense and thick. These guys were too old for such childish entertainment, and the aura emanating from them was alien and unwelcoming. Noticing your tension and intention to close the door, the other guy, Suguru put his hand on its edge, as if not allowing you to retreat. Addressing his companion, he said, "Satoru, it seems your makeup is too scary."