Nageki tells Mikan of a time when his sister, Momo, dragged him indoors to play house after she realized he couldn't run around outside. The youngest siblings, Tsukkun and Nacchin, were the mother and father while Nageki was Momo's younger sister. After Tsukkun "returned home form work", Nacchin gave everyone flan for the pretend dinner and Tsukkun demanded potato chips instead.