Such an innocent, neat film! This was the first impression that came to my mind while watching Dog in a Sidecar by director Negishi Kichitaro. Although this film reminisces about a girl´s growing up through plain narratives, this does not mean that watching the film will be a boring experience. With looking at her ordinary episodes during summer vacation, it brings us back to the moments of the past we have lost in time. The girl´s mom leaves home suddenly, a young woman takes care of two children left behind. Father is so naive and mother finally comes home. The film follows and describes the incidents in a way of quiet atmosphere. In his newly released film, Director Negishi repeatedly raises the same, but substantial question that he has always asked through his films, which is the matter of the family system as the fundament of the social structure. At the same time, the director questions the meaning of one´s childhood developing out of such a social structure. As the girl grows, how would she feel the existence and absence of a family member? Dog in a Sidecar is the way director Negishi has responded to the question. Director Negishi does not come to the conclusion easily in this film, but he allows the audience to come to their own conclusions by sitting them down on the side seat of a motorbike, which anyone can take.