A little girl around the age of 9 walked into a cave with blood stained hands. She had been walking for hours, lonely out on a cold dark night. Why you ask, you see this little girl had killed most of her clan. for she was the fire element her body was able to combust into flames. The little girl sobbed for a while and eventually fell asleep in the cave. little did she know that the cave she slept in was an akatsuki hideout.
"Itachi look what is that" a man said grabbing his sword getting closer to the body. "kisame let go of your sword its just a little girl" Itachi said putting his hand in front of kisame. The little girl heard their voices and woke up, getting scared she scurried to her feet and pulled out a kunai. trembling she said "w-who are you". kisame laughed while itachi stared at the little girl. kisame was about to kill the girl but was stopped by itachi "stop we dont know what she's capable of, lets take her to leader-sama". she started shaking her head "n-no state your name first". itachi showed up behind her and threw her over his shoulder "let me go" she started yelling hitting his back. she eventually stopped knowing he wasn't gonna let her go.
They had finally gotten to the way back of the cave and itachi dropped the little girl on the floor in front of everyone. "Itachi who the fuck is she oi who the fuck are you" a man with grey hair and a giant scythe like thing said. The little girl got scared and stuttered "m-my n-n-name is mizuki". Itachi grabbed hidan by his collar "don't scare her shes just a little kid". "Huh who's a little kid" a lady said walking up to mizuki. she looked up and saw the lady who had blue hair with a paper flower in it. "Hello my name is konan you must be the little girl" she said holding her hand out to Mizuki. She gladly took it and hugged konan taking her by surprise.
From that day on mizuki was taken in by akatsuki as their little child.