The situation probably has improved in Japanese companies. There is less overt sexism, and people are aware that power harassment is a bad thing, though the law of the jungle still applies in small companies and some large companies. The government gave a clear signal about what they thought about workplace bullying when Matsuri Takahashi was bullied and overworked to her suicide at the age of 24 in 2015 while working for the huge advertising company Dentsu. Her mother kicked up an enormous fuss, and in the end the company was fined just 500,000 yen and nobody was held responsible for her death. I could tell you some horror stories about my own experiences, but I'd prefer to keep them offline - suffice to say that I'm very glad I no longer have to visit a Japanese office.