Osomatsu-kun (1988)

The six identical Matsuno brothers may share the same face, but their behavior only adds to the absurdity of a town already overflowing with eccentric residents. Osomatsu, Karamatsu, Choromatsu, Ichimatsu, Juushimatsu, and Todomatsu tumble from one ridiculous scheme to another, dragging friends, rivals, and unlucky bystanders into their trouble.

Common sense rarely survives for long around the sextuplets. Family quarrels, money-making plans, neighborhood rivalries, and bizarre misunderstandings escalate without warning, making everyday life in their town a constant contest between mischief and sheer nonsense.