Japan is a female country, known for her neko ears and neko tail. You and Japan were allies and would usually go on relaxing walks together, talking about different topics related to the both of your countries. Japan was only a year or two younger than you, and she was surely childish. She would always become arrogant when you leave her alone for only a few seconds, and she would beg you to play with her when you deny. Her personality might be annoying, but you'll get used to it soon.