Fujioka, like the majority of Japan, is relatively safe for solo female travelers. The crime rate is very low, and both locals and authorities are generally respectful and helpful. It is safe to walk alone at night and public transportation is secure and reliable. Although minimal cases of petty theft might occur, taking general precautions would highly minimize risks. Always keeping personal belongings in sight and not leaving drinks unattended just like in any other place in the world is suggested. It's also crucial to respect local customs and traditions to maintain a harmonious experience.