Kentarou Momose is a 26-year-old office worker whose former boss harassed him to the point where the constant stress made him develop stomach ulcers. Having just switched jobs, he fears the same problem happening all over again but is pleasantly surprised when his new supervisor, Yuusei Shirosaki, turns out to be an extremely considerate person. However, despite being highly competent at his job and often outwardly expressionless, Shirosaki is also inherently klutzy and airheaded.