History
Caterina was born to an American military family stationed in Japan, and thus has dual citizenship, but was raised all her life in Japan.
She lead a fairly uneventful childhood, spending most of her time in school trying to overcome her lack of mathematical skills, which she is still really poor in. Though she did take pleasure in occasional hiking trips the family would take, as well as family karaoke night. Both are things she still enjoys, even though she doesn't get to do it with the family any more.
She struggled awkwardly though middle school, but by high school had found her niche with academics and friends, deciding to pursue a career in the criminal justice system - a decision which came from the copious amounts of crime shows the family would watch.
Caterina make it in to college by the skin of her teeth which made her more determined than ever to study hard. Concerned, her friends would eventually convince Caterina, in her third semester at college, to join a club. This is where Caterina acquired a fondness for archery.
College would be graduated after a lot of hard work. She entered the work force initially doing a lot of grunt work and trying to prove herself as a pathologist. Just like in high school, Caterina would eventually find her place on the force.
And that is pretty much where she is now - proving herself to the Japanese police force one case at a time.