Be sure to park your car in a well-lit area if you have to make a stop at a supermarket or other such store late at night! Someone I know had a close call with two foreign-looking men (maybe of Southeast Asian descent) in a dark parking lot. They watched her get out of her car and followed her in…at the time they pretended to buy things (all sorts of things men usually would not buy) – sensing something wrong, she made a mad dash back to her car and left. This was in a supermarket located in southern Tsukuba.
Watch out for yourselves, ladies. Don’t go out alone late at night unless you really have to. If you really must go out, at least pick a busy place like the Kasumi supermarket or the Terashima drugstore in Takezono.