When 法火 at Mt. Hiei was burnt out in the fire attack waged by Nobunaga ODA against Enryaku-ji Temple on Mt. Hiei in 1571, 法火 was supposedly carried from the Yokooji family house to Mt. Hiei, and 法火 is still burning in the kamado (kitchen range) of the house, having been protected for more than a thousand years so that the original flame would not go out.
織田信長の延暦寺比叡山焼き討ち(1571年)の際には、比叡山の法火が消えたため、ここから火を比叡山へ運んだといい、現在でも、火は家の竈にあり、種火が消えないように千年以上も守り続けているという。