Daitetsu Oosawagi is the patriarch of the Osawagi family in Urayasu, Chiba Prefecture. He lives with his wife Junko, their four children, and his father Kintetsu. As the family head, Daitetsu possesses a unique talent for igniting explosive chaos from the most ordinary situations. Simple family outings or minor household incidents routinely spiral into large-scale, absurd disturbances under his influence. This constant escalation cements the Osawagi family's reputation within their community for extreme and unconventional antics.

Daitetsu operates within a bustling, multi-generational household where everyday interactions frequently erupt into unpredictable and exaggerated scenarios. Though his personal history remains unexplored across documented media, his core function as the family's focal point for transforming mundane conflicts into major upheavals is unwavering. He stands firmly at the center of the family's collective, chaotic energy, driving their shared identity as a source of relentless, preposterous commotion.