Genzou Hayashi oversees a weathered apartment complex housing the Yamada sisters, maintaining a gruff exterior that earns him the title "Dark Lord of the Rich" during stern rent collections. Though his imposing presence unnerves the sisters, he remains their unexpected guardian, having offered them shelter when their father’s gambling debts left them homeless. His brusqueness masks a history scarred by loss—his wife Eriko and daughter Mami perished in a truck accident, a tragedy that lingers in his guarded heart. The sisters’ vulnerability mirrors his own shattered family, awakening a grandfatherly vigilance that drives him to covertly shield them from crises threatening their stability. Yet this protectiveness never softens his insistence on timely payments, reflecting his philosophy of merging accountability with empathy. The fifth episode unravels these buried threads of grief and duty, illuminating the motives behind his austere yet unspoken care.