Kashiwa is generally a very safe city for solo female travelers. Crime rates in Japan are remarkably low compared to other global standards, with precautions in place for overall public safety. There are safety measures such as well-lit streets, reliable public transportation, and the people are generally polite and respectful. However, always remember to follow standard safety practices like not walking alone late at night in less crowded places, keeping your belongings secure, and being aware of your surroundings.