It is just the ages changes of the people in the story.
Nacoala Riote- 12 in the beginning. 15 when she fought two of the Akatsuki members.
Pein- 27. He does not have six bodies in this. ONLY ONE. The leader in this.
Tobi- 21. Not the leader! He shall stay a good boy!
Orochimaru- 23
Deidara- 17
On to the story!
The winter air blew into Nacoala's room. She shivered and closed the window. She looked out the window and saw children playing in the snow. She got dressed and decided to go for a walk in the forest. She forgot about what happened last night. After she past five trees from the one she trains on she heard more people. She counted four charka signals as she hid hers.
"Come on, guys. This will be freaking easy. Just grab the freaking girl and run. Easy and freaking simple." The immortal said.
"Its not that simple. She beat me and Tobi easily. Plus, Leader-Sama said she has to be uninjured, un." Deidara said.
"She hurt Tobi badly. Why doesn't she like Tobi?" Tobi cried.
"Lets just get her, we are wasting money here!" Kakuzu said. Nacoala slipped on the branch trying to run.
"There she is, un!" Deidara yelled, pointing at Nacoala. Nacoala used different hand signals and water attacked them. After the fight, Deidara, Tobi, and Kakuzu were injured. The akatsuki won when Hidan sneaked up behind her and knocked her out. Nacoala did not have a scratch on her.
-Akatsuki base-
Pein sat in his office as he stared at a torn picture of him, his sister, his mother and father.
'Could it be? Could it really be her?' He thought. Someone knocked on the door. Sighing, he said come in. Deidara, Tobi, Kakuzu and Hidan came in. Hidan carried a unconscious Nacoala. They told him what happened and left.
Pein sighed and checked to make sure she did not have any weapons. He carried her to his room and laid her on his bed. Tucking her in, he kissed her forehead and stared at her again. He turned the light off and left. Konan stood in the hallway the whole time and watched.
"Pein, who is she to you?" She asked.
"All will be announced tomorrow. Go tell everyone there is a meeting tomorrow." He said.
"Hai, Leader-Sama." She said with hurt and anger in her eyes. She ran out to tell the others. Nacoala woke up and reached for her weapons pouch to find that it is gone.
"Imouto-chan." She turned to see Pein. Her eyes widened.
"Onii-san!" She jumped out off bed and hugged him.
"I need to talk to you about something important. I am the Akatsuki leader, and I would like you join."
"You sent those people to get me?" She asked. He nodded.
"I'll join." She said.
"Come, lets go meet the others." Nacoala followed him to a meeting room. Before they walked he gave her an Akatsuki cloak and a ring that said fire. She put them on and followed him into the room. Everyone grew quite and stared at them.
"I would like you to meet the newest member, Nacoala. You will treat her with respect. The reason she is important to me is because she is my little sister." He said. There was few gasps heard.