AN: pretty much the same but with some fixes
Naruto, elite jonin of konaha and anbu captain at age 17, just got his seal master rank. As a seal master Naruto had to focus on one area of sealing above the rest and average in all other seal master ability's. For example, Jiraiya specialized in summoning seals and making seals for summons, while Minato, specialized in speed.
Having exceled in everything, shocking all seal masters out there, Naruto created his own. As a boy Naruto would often wonder if he could just go back in time to figure out what he did wrong, he could fix everything. This was of course before he knew about the Kyuubi, but growing up the novelty of time travel never left him.
So after many experiments naruto had his first time travel experience. Granted it was only to 30 seconds in the past, but either way he was ecstatic. Messing around even more he soon went 20 seconds into the future and gained the knowledge from his future self, replacing him instead of having two Naruto's. He figured that the future was harder because there were so many possibilities that he could even enter another dimension. Messing around with the past, he was so good he went back to he day he was born and found out who his parents were. To say he was happy, shocked, and feeling like a giant idiot for not realizing, was an understatement.
Minato Namikaze, the forth, was his father. His mother died before he could know who she was. Wanting to actually get to know his father and save unnecessary deaths from the third war, he decided to go back.
Obito was a boy who was happy and clumsy and always late. He never would be a good ninja and would always choose goofing off to boring D-ranks. He openly cried though it was a few times he actually cried and what you saw in one look was probably true. This was common knowledge of Obito. Yet most people didn't know about the real Obito. Yes, he was happy but not all the time. No, he wasn't very clumsy, only sometimes when a comment hurt too much and he wasn't prepared for it, he would trip on his feet. He was late, that was true. But he sometimes actually had good reasons for being late. The rest was wrong. Lies mixed with a tiny bit of truth.
No one knew that Obito wore a mask. Not a huge one like his teammate Hatake Kakashi or Sasuke or even Naruto. He just acted below his actual skill level. And that was just fine, no one knew. Well other than Naruto. Naruto knew. When he heard the stories about the goggle wearing genin Naruto knew he wore a mask. Obito reminded Naruto of his self and Naruto easily liked Obito the best out of the stories of team 7.
He would always prefer Kakashi to Obito, but only the older Kakashi. His Kakashi. Not the stuck-up original sasuke prototype.
Performing the seal and the hand seals Naruto pumped a lot of chakara into his jutsu and thought around the time he wanted to go back. In a flash of yellow and purple, he was gone.