After Suigetsu and Jūgo escaped the samurai prison of the Land of Iron, they travelled to a hideout in an unknown location. It has the mouth of a snake for an entrance and several snake-like candle-holders on the walls. Here, Suigetsu found a secret chamber after Jūgo had attacked him and broken a false wall. Within his secret chamber, Suigetsu claims to have found invaluable information that may turn the tides of war in their favour.
