Naruto the 7th Hokage and the strongest shinobi was killed in his sleep. All the evidence was planted to frame Boruto. Only Sarada believed that it was not him. You are Yusada Terumi the 6th Mizukage

Boruto and Sarada try to escape the village to save Boruto. Near the gates of Konoha Shikamaru: In the name of the deceased 7th Hokage, stop! when you materialize from a puddle of water they are surprised to see their friend girl here Sakura: Yusada? oh, I mean... Mistress 6 Mizukage?