After having his mouth open for what seemed like five solid seconds, Minato asked "You… are you two, Uzumaki?"
"T-that's right..." There was no point in hiding the fact after they had already been caught. Karin and her mother could only hope that Chojusen hadn't teleported them into the a village that had a grudge against the Uzumaki Clan. Their clan had been wiped out in the past for being too good at sealing techniques, so there was always the possibility that they were facing an enemy of their fallen clan.
Fortunately, Minato and the Hidden Leaf Village were not against Uzumakis; in fact Minato was married to one. Minato said "This is wonderful news! Wait here, I'll be back in a second." Then he teleported back to his house and brought with him, his wife.
Kushina was over the moon when she found out that some of her clan members were still alive, and that she wasn't the last Uzumaki left. It was a bit tragic that none of the Uzumakis that survived were male, meaning that the bloodline would end with Karin's generation. But finding any members alive after all this time was good enough news for her.
Karin's mother was equal happy to find another member of her clan alive, and she was even more ecstatic by the fact that she would be safe in the village Chojusen took them. Minato obviously agreed to let Karin's family live in the village with living expenses paid. Even if he didn't do it because it was a favor for the mysterious stranger that helped him during Obito's invasion, or because these were relatives of his wife, he would still do it as a way for the village to give reparations to Uzumaki Clan, after they failed to stop the other World Nations from killing them off.
Karin and her mother were given a nice little house just a couple blocks away from Minato and Kushina's house. Since that area was close to the center of the village, where all the strong clans had their compounds, the Akimichi Compound was also very close to their new home.
After sorting out the village's new Uzumakis' living arrangements, Chojusen bid everyone farewell and returned to his training adventure. He had to keep his status as a three-year-old Kage-level figure a secret, so he couldn't ask other people to help train him, and he didn't want to go through another "self-learning training experience," so he restored to asking some of the butterfly clansmen for help.
He summoned a high ranking member of the butterfly clan and told him about his problem. The butterfly, Hochoyoshi, promised to train him into a capable warrior. Surprisingly, even though butterflies themselves were weak and useless in physical combat, they were damn good teachers.
When Chojusen started another bout of training in some random forest, he would get great fighting advice throughout the battles. Chojusen's summoning skill didn't need to be constantly fed energy; it was a one time cast. So even though his powers were restricted, when he was fighting with enemies, Hochoyoshi wouldn't suddenly leave him.
Since Chojusen's limiter would restrict his fighting power to about the same level as his opponents, it didn't matter who he faced. He would get beaten up on relatively similar levels at the start of his training excursion, regardless of how strong his enemies were; unless the enemy he faced was stronger than his max power.
At the start of his training, Chojusen would often get severely injured while he fought wild beasts, but he never collapsed like he did in his first fight; having teleportation and a good teacher were strong countermeasure to prevent that from happening. Still, the limiter seemed to have a grudge against Chojusen as every time he fought an opponent, his power would be restricted to the bare minimum required to still give him a chance at winning his fights.
It took Chojusen a month to learn how to beat a wild beast, without severely injuring himself in every other fight. After another month, he could beat most enemies in one on one fights with only minor injuries. At one point, he did try to move up to group battles, but the limiter didn't make his strength equal to all his enemies average power levels combined. Rather his power would just be enough to "handle" whatever group he took on without dying.
As Chojusen fought more and more, he learned many things about combat like battle theory, position awareness and environmental augmentation. Since his powers were limited to the bare minimum, what really counted was his proficiency in using the skills he had at his disposal. It was through this harsh training that he started to understand just how ridiculous some of his skills were.
When Chojusen was in combat he needed to have at least 500,000 power and energy at 750,000 just to support any of his Sage Mode transformations; he only found this out during his third month of training, when he started fighting some of the stronger B and A rank Chakra Beasts.
Then there was his ridiculous Void Cloak, which made him intangible. BUT, the skill didn't mention how attacks of any energy type, regardless of if it's space type or not, would still hit if the energy mastery of the attacker was higher than Chojusen's mastery of space. This led to a close situation, where Chojusen was almost killed off in a battle against S rank Kage-level Chakra Beasts, after relying too much on his Void Cloak.
Combat was the best way to rise his skills, but even after fighting for one year, he hadn't managed to evolve his skills. After the first year of training, Chojusen had gone all over the world and fought with as many wild beasts and Chakra Beasts he could find. By the end of this first year, he even had fights with S rank Chakra Beasts, where his limiter didn't do anything.
On the second year of training, Chojusen felt he had seen most of what Chakra Beasts could offer, so he moved on to fighting against people. Unfortunately he couldn't just walk up to people and ask for a fight. Even if he wasn't a four-year-old, why would people want to accept his challenges?
Thus, he had to take extreme measures. Chojusen learned a transformation skill and evolved it twice before deciding to bring hell on earth.
[Transformation (Rank SS | MAXED): By using neutral energy particles, the user can achieve true shapeshifting.]
Chojusen used the transformation skill and took on the appearance he would grow into, in fifteen or sixteen years; the same appearance he would manifest after entering his Fiendgod Butterfly Sage Mode, excluding the black marks. His height grew to an impressive 1.9 meters tall. His hazelnut colored hair and pupils became deeper in color. His hair grew a couple inches longer, which he parted on the left side, to get rid of the spiky afro cut he had been sporting all this time.
Since his child-size clothes would be ruined if he "wore" them while in his adult form, he bought a full-body black tracksuit with three ostentatious white stripes running along the side of the arms and legs section of the clothes, from the system store for the "cheap" price of ten points.
These clothes could repair themselves if they were ever damaged and could adapt to Chojusen's size, so he wouldn't have to worry about taking his clothes on and off while transforming. However, the clothes offered no additional defense; if they did, they probably wouldn't have cost him only 10 shop points.
With these preparation taken care of, Chojusen started the second and final phase of his training adventure. But suddenly, before he had even left to start the second part of his training, the clone that he left behind with his family dissipated, and he received news that would put an end to his training, before it even began.
Now that Chojusen and Choji were four years old, their father, the Head of the Akimichi family, would begin to train them, before letting them go to the academy to officially become ninjas. Chojusen had to come back not only to receive this training first hand, but also because after he learned one of the Akimichi Clan's secret techniques, he would be given a face tattoo as a rite of passage.
On one hand, he was sad that he didn't get to finish his training adventure like he planned, but on the other hand, he was glad that this lifestyle of fight, eat, sleep, repeat, would come to an end. All this time, he had been periodically deactivating his clones to find some entertainment in the form of memories the clone spent playing with his brother and his friends.
However, receiving the memories and actually doing what the memories entailed were two very different concepts; like the difference between looking at a picture of the Hokage Monument and actually seeing it with his eyes. Now, the only thing Chojusen wanted, was to experience these fun times first hand.
Chojusen deactivated his transformation, still a bit salty from having wasted 10 shop points, and waited for an opportune time to switch places with one of his other clones. Chojusen teleported back to his house, and under the effects of his Void Cloak, he told his clone to go to the bathroom so he could take the clone's place.
The plan was successful and Chojusen managed to integrate back into his house with none the wiser with regards to his beast-hunting adventure.
Chojusen spent the first couple days back in his home, by playing with his brother and their friends; now that he was four, both he and his brother were allowed to walk to their friends' houses to play whenever they wanted. They lived in a highly secure area with ninja's stationed nearly everywhere, so a kid walking through this area, would not be dangerous; especially, not the kid of a Clan Head, like Chojusen.
Over the past year, Chojusen's clones had made a lot of progress deepening the friendships he had with Shikamaru, Ino, Karin, Shino, Kiba, Hinata, Sakura, and Naruto. Even that grouchy Sasuke had warmed up somewhat towards Chojusen, as they would occasionally greet each other in passing.
As the weekend came, the first thing Chojusen did on Saturday morning was to go with his brother to the Akimichi Clan's courtyard. There, in a decently large field of grass, Choza smiled and said "Today's the day your training begins! I know you love to play ninja with your friends, so now we will work towards making you into real ninjas!"
Chojusen looked at his father with eagerness in his eyes. If he was formally trained into being a ninja, being extremely powerful might not be so out of place. As Chojusen was having his naive thoughts, Choji was also eager to become a real ninja and impress his friends.