In the fall of his first year of junior high school, Arata Kouda encountered a strange thing----. In this home comedy, a mysterious creature named “Kujima” brings new life to the Konohda family, where the atmosphere is slightly tense due to the concern for the eldest son, a ronin student who is preparing for the entrance examinations! By the way, the creature, who calls himself Kujima, speaks normal language and eats the same food as humans (or insects). Did he come from outer space, or did he...!