Komajirō appears in official media alongside his brother Komasan as part of a sibling pair. Together, they revisit significant moments from their past experiences. These shared memories involve family members called "Koma Kaachan" and "Komami," focusing particularly on a summer remembered for its positive associations. Komajirō and Komasan select and revisit emotionally resonant stories from their history, encompassing both uplifting and poignant moments. In specific episodes, Komajirō assumes the role of narrator for segments preceding the opening theme music.