Disclaimer: I don't own Naruto or anything else mentioned in this story.
Kushina Uzumaki was walking home from the market with a soft smile on her face. She was really happy; Kushina had been dating Minato Namikaze for the last six months. Earlier he told her to cook her favorite food for dinner because he had something to talk to her about that would change their lives forever. Naturally when she heard that she thought he was going to propose to her.
Dinner was full of small talk and silent anticipation. When they were done eating, Minato cleared his throat.
"Kushina." She looked deep into his eyes, making sure to remember every detail of this moment.
"Today I was asked to be the Fourth Hokage." It took her a minute to realize what he'd said. Then Kushina gave him the biggest smile she could muster in the face of such massive disappointment.
"That's great news Minato-kun. I can't think of anyone who deserves it more." Thankfully he mistook the tears in her eyes for happiness. He took her hand and led her into their bedroom, to celebrate the way all young couples do. Once they were finished Kushina rolled over and silently cried herself to sleep.
The next evening found Kushina in a bar drinking and sulking. No one bothered her because her temper has quite a reputation of its own. Once she figured she had enough she started to stumble home, not noticing the figure appear behind her.
The figure reached his right hand out hand touched her shoulder, and then they both disappeared into what looked like a black hole.
When Kushina woke the next morning she couldn't remember anything that had happened. When she moved to get up she felt as if she'd been punched in the stomach. Pulling up her shirt she noticed the pain was coming from her seal, the skin around which was red and sore. Worrying that the seal was weakening, she woke Minato up to have him check the seal.
As Minato studied the seal on his girlfriend's stomach he couldn't see anything wrong with the sealing array. He did notice that the skin was irritated so he told her to go to the hospital for a complete check-up. As the day passed the pain and soreness went away, she figured she must have just slept on it wrong, so she decided to forgo the hospital visit. It wasn't until a month and a half later that she had wished she'd gone.
The last couple of days Kushina had been having off and on stomach aches. This brought back fears that her seal was acting up from a month ago. She decided it would be best, no matter how much she hated it, if she went to the hospital for a check-up.
Kushina sat on the hospital bed waiting for the results of her tests to come back. Just as she was getting up to leave; the door opened. A nurse walked in, while looking through Kushina's medical chart, and smiled at her.
"Miss Uzumaki, thank you for waiting we're a little short staffed lately." Kushina nodded that it was okay, although she was annoyed at how long it had taken. "All your tests came back normal and you are fit for active duty. Was there any specific reason you came in today?"
"Well the last few days I've been having sporadic stomach aches." Kushina held her stomach as she said all this.
"That's normal in the early stages of pregnancy it usually goes away after the first trimester. So there's nothing to worry about." The nurse recognized the look on her face. "You didn't know you were pregnant, did you?" Kushina was pale and just shook her head.
The nurse said her congratulations and left so she could have some time to think. Kushina's thoughts were anything from 'Pregnant' to 'How do I tell Minato about this, he just became Hokage.' To say Kushina was scared was an understatement; she remembered when her friend Mikoto Uchiha had Itachi, and all the screaming that came from the delivery room.
-Eight Months Later-
"Push, one last time". The women speaking was Kushina's midwife Biwako Sarutobi. With one last big push, Kushina did as she was told while her husband Minato concentrated on keeping her seal steady. Then the cries of a baby were heard.
"It's a boy." The midwife said. She cut the umbilical cord and moved to wash the child. Minato wasn't able to catch a glimpse of his son before he was taken to be cleaned, and he couldn't move to see him because he had to maintain the seal. After he turned his attention back to the seal he heard the sound a body hitting the floor. He turned to see Biwako dead and a masked man holding his son.
"Step away from the Jinchūriki." The assassin said slowly with a calm tone. He was also holding the baby. "Or the child dies." Once he finished speaking the man threw the baby into the air.
The masked man jump into the air with a knife aimed at the defenseless child's chest. Just before the knife pierced the baby the child disappeared only to reappear on the other side of the room in the hands of the Hokage.
When the man landed he activated the exploding tags he had put on the blanket that was wrapped around the baby. Hearing the hissing of the tag Minato tore the blanket off and jumped with the baby through the door and out into the yard of the cottage. A second later the building exploded.
When he came to a stop he looked down to check on his son. This was the first time he had seen him. The baby had short purple hair and most shockingly was a girl. It was then that it hit him, this wasn't his child. The masked man must have switched him with the girl. Minato quickly hiraishined them to his home and lay her on his bed. Then he went to save Kushina and Naruto, they had decided to name their son after the main character of Minato's sensei's first novel.
He arrived just in time to save Kushina from the nine-tails. Looking around he didn't see Naruto anywhere. So he took Kushina home and then left to deal with the Kyuubi. As Hokage he had to put the village first, his search for Naruto would have to wait.
Minato had just defeated the masked man and asked where Naruto was. The only reply he received was 'There is no Naruto.' As the man disappeared into what appeared to be a vortex Minato heard the Kyuubi Roar and hiraishined to the top of his head on the Hokage Monument. The Kyuubi saw him and fired a Tailed Beast Bomb at the monument. The Hokage was able to setup a space-time barrier which teleported the Tailed Beast Bomb to where it was far enough away from the village not to do any damage.
Then he used his hiraishin to teleport himself and the Kyuubi out of the village. What happened after this is a mystery. All the villagers and shinobi know is that the Fourth Hokage his wife and child died and that the Kyuubi was sealed into a baby girl named Ami.
After he retreated from his fight with the Hokage, Obito Uchiha used his Kamui to return to the hideout in the Mountains Graveyard where he had left the baby with Zetsu. This was the same hideout where Madara had saved Obito. When he landed he walked over to the bed where the child lay and looked down on him.
The boy had short black hair and three whisker shaped birthmarks on each cheek. This child was Obito's son. Nine months ago he had kidnapped the child's mother and tried to remove the Kyuubi from her seal. When he failed Zetsu told him about how the seal would weaken during child birth. Not knowing if she was currently involved with anyone he did the deed himself. The genjutsu he used on her would ensure that she never remembered what happened. Seeing that the child was sleeping peacefully he summoned Zetsu and told him to bring a clone to him.
"You are to copy me and then take him to a nearby civilian village and raise him, his name is Izuna. When I come to get him in a few years I want him to have a strong attachment to me." Obito paused and looked into the Zetsu clones eyes. "You will protect him at all costs. Understood?" Obito growled.
As the clone nodded Obito turned and took a good look at his son. He wished he could raise the boy himself, but until he was able to step back and let Nagato handle everything, he wouldn't have time to think about Izuna. Until then, it was business as usual.
Thank you for reading. My updating will be rather unpredictable so I don't know when or if this will continue. Thank you again.