In literature, "qualm" is often employed to convey a sudden pang of conscience, unease, or apprehension that reveals the character’s inner moral state. Authors use the term to depict moments when a character experiences fleeting yet powerful emotions—whether it is a subtle mistrust or a more acute sensation of fear or remorse. For instance, it can describe a moment of distrust mixed with jealousy when one character feels sidelined by another's actions [1] or mark a brief regret that prompts hesitation in making a difficult moral choice [2]. In other works, "qualm" similarly captures internal conflicts ranging from shame and distress to intuitive forebodings about one’s fate [3, 4, 5, 6, 7]. This versatility makes it an effective literary tool for exposing the vulnerabilities that lie beneath a character’s composed exterior.