After Koan no Eki, in order to prepare for the next attack by the Yuan army, bakufu tried to strengthen its control over the vassals, but the vassals came to live in debt because they did not receive sufficient rewards in Koan no Eki as well as Bunei no Eki.
弘安の役後、幕府は元軍の再度の襲来に備えて御家人の統制を進めたが、文永の役に続き弘安の役においても十分な恩賞給与がなされなかったため、戦費で窮迫した御家人達は借金に苦しむようになった。