Yuhara studied the negotiation bottom line given by the Third Hokage and found it basically reasonable.
Konoha's conditions could be summarized as follows: either maintain the status quo and acknowledge each other, or withdraw from the Land of Rivers together, allowing it to regain its independence and become a buffer zone between the two great nations.
To be honest, the Land of Rivers was dispensable to the Land of Fire, but it held enormous significance for the Land of Wind. Thus, the Land of Fire could give up the Land of Rivers, but it would never allow the Land of Wind to occupy it... Negotiating this peace agreement probably wouldn't be easy. Only then did Yuhara truly realize that his mission wasn't to go to the Sand Village and return alive, but to secure a result favorable to Konoha in the negotiations that followed.
Before Yuhara officially set out, Konoha made several preparations. First, it formally sent word to the Sand Village, expressing its intention to dispatch a peace envoy. The Sand Village then responded positively, welcoming the envoy. Second, it made some battlefield adjustments, sending Jiraiya to the Land of Rice and redeploying Orochimaru, who had maintained a high win rate against the Sand Village, to the Land of Rivers.
There was no doubt that this was meant to intimidate the Sand Village. The message was that they wanted peace, but that didn't mean they were afraid of a fight.
Those were the only preparations Konoha made. If it had sent a large number of troops to the Land of Rivers for the sake of a peace treaty, it would have been putting the cart before the horse.
Three days later, Yuhara and Kou assembled in front of the Hokage's office building. Konoha's dawn was quiet and still.