"問題児" (pronounced "mondai ji") is a Japanese term that translates to "problem child." It typically refers to a child who exhibits challenging behaviors, such as defiance, aggression, or difficulty in following rules. These behaviors can create difficulties in school and at home, often requiring additional support from parents, teachers, or mental health professionals. In popular culture, "問題児" can also refer to characters in anime or manga who are seen as troublemakers or outcasts. These characters often possess unique abilities or traits that set them apart, leading to both conflict and growth throughout their stories. Examples include characters from series like 問題児たちが異世界から来るそうですよ? (Mondaiji-tachi ga Isekai kara Kuru Sou Desu yo?).