Three main banks in Japan are Mitsubishi UFJ, Sumitomo Mitsui Banking corporation, and Mizuho bank. Your company may ask you to have a bank account from the bank they are using to forward your salary.... If you do not speak Japanese and cannot receive help from your employer to open a bank account, Shinsei Bank might be a good option. More info here https://kimi.wiki/life/shinsei-bank-open-account