In fairness, “gaijin” is any foreigner. And a lot of laws in Japan are very much based on warped Christian values (can’t imagine who they got that from…).
But yeah. One of my best friends is Japanese American and the way she sums it up is: You know you truly understand the culture of Japan if you realize why you only want to visit for a few weeks at a time.
With bonus points for anyone who can read quickly realizing why the general stance toward APA is “Only if you get a REALLY good deal”