Serious question: During the Japanese Waring States Period, castle and monastery sieges happened every few years. From what I understand, Japanese castles were made of bamboo. So instead of besieging castles, why didn’t attackers simply burn the castles down with all their enemies inside them?
Japanese castles were made of wood. (I don't think bamboo would have been sturdy enough for a large building?) Please see this previous answer by /u/LTercero.