> just engaging in work theater

I do not have firsthand experience at this, but from my understanding being a salaryman in Japan means staying in the office until the boss leaves. It does not matter if you are producing value or not in that time, it is more about appearance and company loyalty.

I agree with you 100%...I think the most I've ever worked in a week was probably in the 50-60 hour range and that was one of the worst experiences of my life. I cannot fathom doing 90 hours for SEVERAL YEARS without wanting to drive into oncoming traffic.