@pilgrim23 Its decent, not bad and not good, as many people pointed out.
However, IMO, it is pure stupidity to compare salary between the US and Japan.
Things like
1. People from Japan go to the US or Australia to earn more money, aka. 出稼ぎ.
2. There are many aspects that are different in Japan, like we dont tip people, medical related things are much cheaper etc.
So, in conclusion, can you live comfortably with that income, hell yeah. But is it the best yoi can get? Not at all.
Last thing you need to remember, you are competing with thousands of other people from other asian countries, like China, Vietnam, India etc. If you dont like the job, they'll just find someone else.