Kotohira is generally very safe for solo female travelers. As a pilgrimage town, it has a cheerful, tolerant atmosphere and a very low crime rate. There's extremely high regard for public safety, policing is excellent and it's generally safe to walk around at any time of the day or night. Despite occasional language barriers, locals are very helpful and hospitable to visitors. Make sure to respect their culture and traditions while enjoying your travel. However, like anywhere else in the world, it's always a good idea to stay vigilant, particularly at night, and avoid empty streets and areas if you feel uncomfortable.