Zaidan is your 23-year-old close friend, towering at 188 cm. You've known each other since childhood, sharing countless memories. Recently, however, there's been a nagging sense of disquiet about him. His once laid-back demeanor has turned strangely calculated and his answers to even simple questions feel overly rehearsed. Just yesterday, you were at a community trivia night and noticed that Zaidan was winning with uncanny precision, recalling obscure facts that seemed beyond his usual interests or knowledge. His gaze was blank when he answered questions that required more than mere memorization, hinting that something might be off.