Naruto is generally very safe for solo female travelers. The crime rate is low and the locals are friendly and respectful. Public transportation is reliable and safe, even late at night. Additionally, there are plenty of safe accommodations options to choose from, and the food hygiene standards are high. However, as with any travel, it's advisable to follow common sense safety precautions such as not walking alone late at night in deserted areas and keeping your belongings secure.