Play word 大禍時 大禍時 おおまがとき twilight (traditionally regarded as a time when accidents and disasters are frequent)
Play word 大空位時代 大空位時代 だいくういじだい Great Interregnum (period of the Holy Roman Empire; approx. 1254-1273)
Play word 大御所時代 大御所時代 おおごしょじだい Ōgosho period (between the Kansei Reforms and the Tempo Reforms, approx. 1787-1843)