不ふ良りょう行こう為い

Misconduct is strictly punished at school.

• 非ひ行こう

  非行 is a broader term for delinquency or wrongdoing, while 不良行為 often implies a legal or official categorization of juvenile misbehavior.

• 不ふ良りょう

  不良 can mean 'delinquent' as a noun or 'bad' as an adjective, but 不良行為 specifically refers to the act or behavior itself.