Seiji Tani manages Takakoso, a historic dormitory housing aspiring comedians competing in the Teppen Grand Prix finals. Physically muscular and bald with facial hair, he imposes final trials on the five comedy trios through demanding ordeals and tasks. These include confining all fifteen comedians inside the dormitory for three days to confront unusual visitors as a concluding test. Tani enforces strict discipline, reprimanding groups for perceived slacking and mandating corrective actions like dispatching all members to a rigorous mountain hot springs training camp. His authority governs daily dormitory operations and sets participation conditions for the Teppen Grand Prix.