I stayed in JP for about 6 months in 2016 and came to the conclusion its (very) expensive (After comparing to some places I lived longer Shanghai, San Francisco and Amsterdam) . Living: depends where you stay. The further away from greater Tokyo, the cheaper it gets. My 40m2 1 br apt in Nishi Sjinjuku (was 25 min from my work place) cost 2800$/month. Typically 1 hr to 90 min train travel makes it affordable. Common food is expensive (surely compared to the US midwest), but the quality is always good. Transportation is also not cheap. On the other had taxes are (very) low. Income tax for your range is up to 20%. National health insurance pays typically about 70% of the cost, the rest is yours to take care of. There are also things that are 100% personal pay.
In short, I think 5MY (32k$) is a low salary for a person living in the Tokyo metropolitan.

 

Thank you very much for the feedback! Still waiting on the company to decide on me as a candidate, but your info is much appreciated. I'm going to shoot for 6 if we get that far.