^ That's interesting to learn! We have an occasional poster who lives in Tokyo, I think, doing the same thing.
From what I've heard the money is good but everything else about life in Japan seems to score a negative, including the attitude of students in an ESL class: too deferential. But perhaps with your experience in US schools you were just lapping that up!!
and yes, Bangladeshi civilians are much more vulnerable. No real defenses, afaik, and not even effective warning systems in place