"악" (pronounced "ak") is a Korean term that translates to "evil" in English. It refers to actions, thoughts, or behaviors that are morally wrong or harmful to others. In various cultures, including Korean, the concept of evil often involves a struggle between good and bad, influencing moral decisions and societal norms. In literature and philosophy, 악 is frequently explored as a theme, examining the nature of wrongdoing and its consequences. Many stories depict characters who embody 악, serving as antagonists that challenge the protagonists. This exploration helps to understand human nature and the complexities of morality.