Osamu Saitou 斎藤治

Osamu Saitou is perfect as a company director; he is calm, decisive and performs his daily routines like an accurate robot. When it comes to work, he is strict to himself as well as his employees, so they often refer to him as the "Devil Boss". If one has to find out a weak point of his, it is probably his younger sister who is still in high school, Mami Saitou.