応天門の変
おうてんもんのへん
Ōtenmon incident (conspiracy in 866 CE that centered on the destruction of the main gate of the Imperial Palace)
天応 is read as てんおう (tenou) and means Ten'ō era (781.1.1-782.8.19).
てんおう
tenou
おうてんもんのへん
Ōtenmon incident (conspiracy in 866 CE that centered on the destruction of the main gate of the Imperial Palace)