Konoha :

In the most famous building in Konoha, an old man, smoking with a smoking pipe, was staring out of the window. Behind him was a table full of papers, which needed his signature. Hiruzen Sarutobi, however, continued to stare out of the window at the 4th Hokage's monument. Today was exactly a year since Konoha had to face the Nine Tails assault. 

Hiruzen finally let out a sigh. Konoha suffered the most losses of any village in the 3rd great ninja war due to having to fight every village. And merely a year later, they had to face another assault which not only killed the 4th Hokage, but also a lot of their ninjas and civilians. This not only increased the burden on him and the existing ninjas but also caused Konoha's orphanage to be overpopulated. Hiruzen sighed again, finally starting his day by getting that damned paperwork done. 

In one such orphanage, Suzuki Fujin, a 5 year old orphan, was sound asleep. Suddenly, however, he got up, screaming in pain while holding his head and falling unconscious. The scream woke up his fellow orphans, who alerted the caretaker. 

A few hours later, Suzuki Fujin woke up, but still under intense headache, thinking 'Damn what the heck's up with this headache! While I did stay up late at night working on that project, I haven't ever suffered such a headache. And it feels like memory is all jumbled up.' 

Slowly he opened his eyes and looked around. Frowning upon noticing the unfamiliar surrounding, 'what is this? Where am I? This ain't my room.' 

He tried getting up, but suddenly noticed, "Why am I so much smaller? Did I somehow return to the past?" 

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However, his thoughts were broken by 2 kids walking into the room. They suddenly ran towards him and one asked "Fujin, are you alright?" 

Whereas the other one asked, "Why did you yell?" 

Fujin saw them two, thinking 'Who are these two? Wait, I think I know them. But how? Damn this headache is unbearable. And I need to get my thoughts sorted out somehow.' 

With that, Fujin pretended to fall unconscious again, trying to make some sense of the situation. The 2 kids however got worried and ran back to the caretaker. 

While he pretended to be asleep, he started to gain access to new memories. Memories of Suzuki Fujin. It took five hours of gaining clarity, an insufferable headache, and disbelief for him to understand, 'Fuck! I transmigrated! And into the fucking Naruto world of all places! But how? I don't even remember dying. Don't you need to die to transmigrate? And damn, transmigrated from that safe world with rules and regulations into this deadly world full of cunning and powerful ninjas. And I got transmigrated into a fucking civilian off all people!' 

After a few minutes of disbelief and ranting, he finally calmed down and decided to understand and plan his future. He thought, 'Alright, I guess I'll be known as Suzuki Fujin from now on. Unlucky fellow to lose his life to someone transmigrating into him. I wonder how that even works! 

Anyways, I got a lot of information from his memories. His parents seemed to have died in Kurama's rampage and he was incredibly lucky to live. And damn, after being admitted into the orphanage, he was examined by Root to see if he could be taken in. Lucky me that they didn't choose him. 

Hmm, since Kurama's attack took place a year ago, and since he is 5 years old, it seems I'm 4 years older than Naruto and his generation. Alright, that gives me more time to train and gain power. The Uchiha massacre should occur after around 7 years, the Konoha crush after 12 years, and Pain's attack and 4th great ninja war after 16 years. Wait, what's this feeling?' 

At that moment, he felt a weird energy flowing through him. He thought, 'Is this chakra? His memories didn't have anything related to chakra. So does it mean that chakra was unlocked when I transmigrated into him? 

Finally some good news. With this, getting into the ninja academy should be easier than other civilians. Though I wonder how my chakra level compares to the chakra level of others. Anyways, probably better to get a look at the surroundings first to understand more of this place.' 

After completing his analysis, he finally stopped pretending to be asleep and woke up.