Hearing that the Sand Village had sent a special mission to Konoha—and that this mission had specifically requested his participation—Yuhara's first reaction was to wonder if the Sand Village was planning some special scheme to kill him... This concern was by no means unfounded. After all, quite a few little incidents had occurred between Yuhara and the Sand Village, and several minor conflicts had led to some misunderstandings.
The killings on the battlefield could be considered "national enmity." Though the hatred they caused was difficult to eradicate completely, it was likewise hard for it to erupt in full unless another war broke out. So even if a Konoha Ninja had inflicted widespread casualties on the Sand Village, after the war ended, the Sand Village would not specifically run to Konoha to try to resolve that hatred.
But Yuhara's situation was somewhat special. As far as the Sand Village was concerned, he had not made a name for himself on the battlefield. Instead, what he had done was far worse... He had gone into the Sand Village and dealt with the Fourth Kazekage in a relatively clean and decisive manner.
To this day, no one remembered why the three of them had gone to the Sand Village, or who had first harbored ill intentions at the time. Compared with the result and impact of killing the Kazekage, the rights and wrongs in between were no longer that important.
In any case, to the Sand Village Ninjas, failing to deal with Yuhara before the war ended was an unforgettable regret. Finding an opportunity to kill Yuhara after the war was an unspoken wish they all shared.
In Konoha's understanding, the Sand Village should have hated "Kakashi of the Sharingan" more. Aside from the propaganda targeting Kakashi, there was even the connection between