Since Emperor Reizei suffered a mental disorder and somebody was needed to act as his deputy, "kanpaku," the role of Chief Advisor to the Emperor, whose service had been unused for many years during the reign of Emperor Murakami, was resumed.
冷泉天皇には狂気の病があり、天皇を輔弼する者が必要で、村上天皇時代には長く置かれなかった関白が復活した。、