Judging from the reduced number of soldiers to 78,000 due to the peace treaty which forced to dismiss part of soldiers, and the defenseless Osaka-jo Castle stripped of moats, the Toyotomi Family decided that holding the castle was not to their advantage and instead they should take a strategy of fighting actively.
和議による一部浪人の解雇によりこの時の豊臣家の戦力は7万8千に減少し、さらに丸裸にされた大坂城では籠城戦は不利と判断したとされ、積極的に討って出る作戦を採用している。