Once again to chapter one for disclaimer and story wide warnings.
Bright Ash
At the age of five there wasn't anything noticeably different between Ash Ketchum of Iki Town and Ash Ketchum of Pallet. Both were cheerful, energetic, and already fully in love with pokemon that would only grow more with the years.
The differences came not in personality but in how such was treated by those around them.
Pallet town had been small and isolated, and the people reflected such in how long it took any to warm up to the Ketchums. Which had lead to that Ash playing by himself for most of the time until school starts, even then that Ash had been mostly left alone, especially when the more popular child Gary Oak had swung back and forth between being a friend and being a bratty tormentor to Ash. This had caused the exuberance that Ash had for life to become more pronounced in a desperate attempt to be seen and liked, which only made things worse in the long run as he was seen as too wild and uncontrollable to certain adults. Add in that the only constant support was his mother and Ash's independent streak became large far too early and not properly tempered by the time he had turned ten.
Iki town was also small, but was not as isolated from the rest of its region like Pallet was. There was no forest full of wild pokemon between it and the nearest city. In fact Hau'oli City was just a brisk walk down a path that was monitored by a few trainer volunteers willing to walk and keep wild pokemon at bay from those going to and from the city or small town. This allowed the children that lived in that tiny town of tradition easy access to the wider world as Hau'oli was the major port of call for tourists visiting their particular island for vacation.
That more open and warmer outlook allowed her to find friends both permanently around to play with and just as willing to go in a herd play or have an adventure in sight of watchful eyes of trainers or trial guides, and some that were there and gone due to vacations ending. Some of those becoming pen pals in later years and giving her more insight into the various regions outside of Alola. Thus by the time school began it was more in line with the normal outlook of such for children since half of the class were already her friends and the teachers known in some fashion or other.
So Ash of Iki town was, not calmer, but more focused as she had more social outlets to drain her energy in and with her Aunt Mary and Uncle Marco two houses down and Uncle Kukui just down the road in his little shack of a lab and Aunt Burnet popping in from time to time there were far more adult figures in her young life to admire and learn from than Ash of Pallet had.
The different professors also had significantly different impacts as well when Harry stepped back and looked at the differences one day down the road.
Professor Oak had been kind and warm, but he was also always busy and being pulled in several directions due to his fame and knowledge having people always seeking him out. Add in a grandson whose feelings also had to be considered in regards to attention given to another child that wasn't related to him, and it wasn't hard to see that Oak had not been able to be as invested in the Ash he had known.
Professor Kukui on the other hand was young and new in the scientific community. While busy with his own work, it wasn't like the workload that Oak dealt with both in research and in being owner of the ranch to house trainer pokemon. Thus had far more time to allot to indulging curious minds that would tumble into his lab slash home to ask if they could help or watch him work with one of his pokemon. It was actually rare during the day for residents to not see one or more small shadows trailing behind the young professor on little 'expeditions' as he pointed out and showed them pokemon that had learned to live within the alleyways and streets of Hau'oli.
This Ash liked all shades of blue and while she liked some pretty dresses she would always go towards shorts and tank tops to wear because she didn't feel as bad to get those dirty as she would a dress when outside playing. Had fallen in love with storybooks and reading, but took a little longer when it came to adding numbers. She already knew she wanted to raise a strong pokemon team and protect her mom and Hazel from bad people. Rayne as well, though Ash didn't say such because Rayne said she was supposed to do that as the older one. She also looked forward to going to Pokemon School so she could be a smart enough trainer to make sure her pokemon were happy and the best they could be.
Yes, Harry could already see just how brighter and more controlled this Ash was compared to the life that had been before.
Thoughtful Hazel
At the age of five something deep within Hazel had shivered and unfurled slowly inside her soul. A process done carefully enough that when Harry blinked dark eyes there had barely been a hiccup in the process of making Hazel of Iki town and Harry Potter one person again. It also helped there were about a dictionary sized list of Rules that Immortals and Concepts had to follow if they placed themselves into the mortal cycle of death and rebirth even for just one life, that made such much easier to handle. For though Harry was Hazel and Hazel was Harry, for the most part it was Hazel that ran the show and Harry mostly observed, mentally commentated to himself about things, and gave slight nudges to keep things from ending in disaster and such.
Hazel who at five liked the colors red and purple, and thought pokemon performances were boring but contests were okay. [Both Ketchum girls were about two steps away from being battle nuts but still remained on the saner side of such then others that would go on to become champions and elite four members.] A little girl who loved numbers more than spelling words, and if she could get away with it would live in nothing but sundresses with bike shorts underneath and sturdy sandals to run around in. Hazel who had a best friend in Rayne but was Bestest with Ash, because they were twins so they had to be bestest friends which was more than best friends, and was certain Uncle Kukui was a superhero in disguise.
One thing Hazel and Harry agreed on wholeheartedly was that their mother was the most loving woman in the world.
Mirror Image
There were only a handful of people able to tell the twins apart at a glance, and fewer still that could do so without using their favorite colors or prefered clothing to do so. Both had ebony black hair that when allowed to do as it please would stick up and curl in wild ways around their faces. Which was why most often it was usually kept up in braids or high ponytails. Both had the same brown eyes, heart shaped faces, and small wiry frames that would likely mature into what would be considered petite by most people.
The key differences were tiny details you would only notice if you were looking for such. Hazel's eyes slanted just a little more than Ash thus were more almond then oval in shape. Ash had an actual button nose while Hazel's had a little upward tilt at the end. Hazel was always a shade or two lighter than Ash despite both constantly being out and about in the bright Alola sunshine, and while Ash was right handed Hazel was left.
Their mother, Uncle Kukui, and Aunt Burnet could tell even when their backs were turned who was who; Uncle Marco and Aunt Mary were only a few seconds slower in figuring it out then the other three.
Rayne could also tell them instantly apart, but considering Rayne was banned early on from ever being the seeker in hide and seek that wasn't hard to imagine. Rayne could find anyone anywhere, no matter how good of a hiding spot they had.
Something deep within Hazel that was Harry twitched when what that meant started to trickle in.
Windows to the Soul
Many who had known Harry when he actually was Harry, and not an eternal companion for Death who would never admit to being lonely, would have wondered at how he could easily go along with not only being a little girl but one that looked nothing like the parents that had died for him.
He would have bluntly told them to get over themselves.
Though in retrospect it was mostly because of several factors. For one he was old by this point. There is only so many hundreds of years you can cling to memories of your life before they become nostalgic and blurred. Add in he really never knew his parents personally and it was even easier for time to heal that wound in his soul when he wasn't being constantly reminded of them by people. So no, it wasn't hard to not feel saddened that his eyes were like tree bark instead of emerald or that instead of being a clone of James Potter he looked like a mixture of his mother and the mysterious father that was never around. The gender aspect was more due to Death.
After his snit over being screwed over by Dumbledore regarding the Deathly Hallows, and about two thousand years of just being a companion for Death to talk to and gossip about the lives of mortals and immortals with; Death had slammed him into the deep end regarding how to nudge mortals back on track of whatever divine plan was set for their world. Literally.
Suddenly finding himself in the body of a perky fifteen year old cheerleader living in California had been panic inducing at first. Though after the fifty or sixty random time of being the hunch or voice in the back of the head that mortals would get that would 'save them' from a bad decision Harry had gotten immune to changing gender, age, race, sexuality, and body type. So living out a life as a little girl didn't phase him in the slightest.
He actually felt a bit like he deserved this life after how horrible his first life had been.
Of course being more a nebulous aspect within the self that was little Hazel, Harry had time to wonder things and it was easy to think about eyes when they were the first thing to see when looking in a reflective surface. Or across the breakfast table at her twin.
Harry wondered how many hours Hermione could go on regarding her theory on why this world seemed to have blue and green, and every shade and mix of those colors, to be the more prominent color in this world instead of brown. Harry recalled how at least in the muggle side of the world you couldn't take three steps without running into someone that had brown eyes. While on the magical side grey to blue had been the norm but Harry was dead certain that was mostly due to inbreeding and some snobbish pureblood making a spell or potion to cause certain eye colors to be considered hallmarks of certain family lines. [The grey and silver that had marked the Black family came to mind.] Even then there were still a lot of brown eyed magicals due to halfbloods and muggleborns.
Yet here in this world Hazel and Ash were actually in the minority regarding eye color. Something Harry had sighed over, because he had at first thought they would be average in such, but Potter Luck. Even Rayne was more in line with this world as her brown eyes had changed to a bit on the red side of copper then actual brown and thus more common than regular brown eyes.
That part that was Harry twitched again when he recalled the ones from Rayne's old life who had red colored eyes.
Steady Rayne
Rayne was seven months older than the twins, and was thus technically a year ahead of them in schooling. This didn't stop them from being a trio and thick as thieves as they roamed their town nor for Rayne to act as an older sister despite how little there actually was between their ages. When you're five and six years old seven months is a really long time to your mind so it made perfect sense to them since Rayne was already learning how to add and subtract numbers that were 3 and even 4 long when they were still getting use to there being two numbers.
[Harry found the fact that double digits and triple digits were such a big thing amusing, even as he despaired over the fact that yet again he was part of a trio, and one of his own creation at that.]
The twins were always pleased when Rayne would prefer playing with them then the older kids in Rayne's grade, and a lot of them tried really hard to get the honey blonde girl to pay attention to them. It was something their mother and Rayne's parents had chuckled and said was just something that had always been when it came to people being wrapped around Rayne's little finger with just one meeting. Though luckily the attention hadn't caused Rayne to act snobby or bratty. Then again Rayne was naturally mothering, and was known to pick up strays from actual wild pokemon that needed a wound looked at to lost toddlers that got separated from their parents in a crowded saturday market.
It was that very nature that had made Ash completely certain that Rayne was going to grow up and be the best mommy the world had ever seen. Hazel agreed to an extent, because Hazel was firmly a mommy's little princess, so would always say their mother was and always would be the best mommy in the world. A deep part within Rayne's soul seemed to cry in defeat at such. The soul that had once been Tsunayoshi Sawada finally unable to deny the very mothering nature it had in its past life and in this life.
Harry should have realized that Sky like nature that was soul deep would be the catalyst for chaos. It had been in Rayne's old life.
Well we're slowly starting to see just what Tsuna's inclusion into this life is bringing about. It'll pick up next chapter and further in the story as well.