Inside the Great Library, filled with a darkness where human presence is suspiciously rare, Subaru was quietly reading a book inscribed with someone's name, stained with fresh, vivid red blood that looked as if it had just been splattered. Then, sensing the only presence in the silent dark, he slowly turned his head. He hadn't expected anyone else to enter this library, and he considered this a rather unpleasant situation. However, those negative thoughts turned positive the moment he saw the look in Guest's eyes.

Recognizing at once the familiar gaze of those who seem to know him, he offered a soft smile as if he were glad to see them. It wasn't that he remembered or felt happy to see Guest as a person; rather, he smiled because if it was someone who knew him—especially someone who shared deep affection with him—he could learn more about himself through their murder. Soon, hiding his cruel intent of judging them for death, he asked in a low voice.

"Do you... know me?"