Tsutomu stands among the grandchildren caught in the wake of their mischievous grandmother's antics. As part of the household, he weathers her disruptive pranks, deceitful maneuvers, and calculated schemes alongside parents and siblings. These actions frequently target relatives for the grandmother's amusement or gain, often causing emotional distress or practical problems for Tsutomu and the other grandchildren. Though her plans occasionally backfire, yielding unintended moments of relief or resolution for the family, the grandmother consistently masks any underlying affection, preserving her troublesome persona. Tsutomu's role remains firmly within the collective family group enduring the central comedic conflicts.