It was the night itachi had to murder his whole clan for the sake of the village,but...when he got ready to kill his oarents mother said with tears

"Please Itachi,before you do it...listen to me....we...werent tottally honest with you and Sasuke all this time" mother sobbed,Itachi lowered his katana to listen to her

"You...and Sasuke...are not only kids we had..." mother said softly and Itachis look got confused

"Before Uchiha clan got into this chaos...i...got pregnant with a girl...me and your father decided to...give her to some other family so...we can save her..." mother said softly with tears Itachis eyes went wide

"Please dear...after you finish this...get Sasuke...and...find her...get her back to place she beloves to..." mother said softly with tears and Itachi nodded softly still in shock and asked softly

"What...is her name...? Whats my little sisters name?" Itachi asked softly,he didnt had in plan to hide from Sasuke,now he had to find his missing sister, the history changed

"[Persona]" She said softly and Itachi nodded and killed them

Later Sasuke came,and saw everything but...instead of Itachis original plan,Itachi explained to Sasuke everything,and he said the plan,Sasuke was still in shock but belived his older brother

Sasuke: "So...were going to find...our little sister huh?" Itachi: "Yes..." he nodded