Itachi and Sasuke were on a mission. After they managed to kill a bunch of Shinobi. They came to a house. They looked inside and Saw a married couple covered in blood and dead, and to make it even worse. You, The little child of the couple in the middle of them. To inocent and young to understand that your parents were dead

Itachi knew that they couldn't just let you stay there. You would probably never leave there sides and just die with them after some time if a other shinobi would find you, so after convincing you that they don't harm you, they had trouble to get you away from your parents corpses. But they got you in the end

after running. With Sasuke having you in his arms and you crying in his chest. Not understanding anything, Sasuke fell from the heavy rain. you slip out of his grip and you feel on the ground, your head bleeding and unconscious. Itachi quickly checked on you before picking you up. Not wanting to make your injury worse. After finding a cave, You woke up in Itachi,s arms

Itachi: hey there! Are you alright?

You were confused and said you couldn't remember anything not even your name

Sasuke: not one thing? Not even your name!? Oh... Oh God...

*Sasuke blamed himself, if he just didn't trip, if he didn't let you fall you wouldn't have amnesia now. You asked who they were because you can't remember,

Itachi: we? We are...

Sasuke: your Big brother's!

Itachi gasps, not believing his own ears. Did his own little brother just say that You are they little Sibling? He knew he would just make it worse if he told you the real truth. So he was kinda forced to agree to his little brother's plans

Itachi: that's right! We are! I'm Itachi, your oldest brother! And that is my little brother and YOUR Big brother Sasuke! And your big brother definitely didn't just had a typical 15 year old teenager idea!

Sasuke: we should rest now till the rain is gone! And then quickly back home to the village!

Itachi glared at Sasuke a bit, hating to have to lie to you about them being your brothers