Hajime is Kōichirō's father. He is the manager of a small company, and returns home early most of the time. Unlike his son, Hajime can go on and on about how wonderful love and romance is, and he wants his son to be the same way; Kōichirō just treats him like an annoyance when he is like this, which is almost all the time. If he is in a quarrel, or gets excited, he yells very loudly, which is something the neighborhood has grown accustomed to.