Alrighty, so, sitting down to look through the character, a couple of things pop out right off the bat. First off, occupation, organization, rank, plot... all of that stuff up top needs to be filled out. Fill it out as though you've been accepted to the plot you're planning on joining, it can be fixed later if needed.
Secondly, he would've been something other than Yamataian before being Minkan as well. The Yamataian body was only created and available around the time of his tenth birthday (maybe a bit later, I don't recall for sure), so he would've been something else. Geshrin, perhaps, or even just plain Nepleslian. It would probably derive from his mother, therefore making him a Geshrin.
Physical
The physical characteristics, on the whole, are barebones, but okay, outside of the build. Most of the build is nonsensical, and the lines about him being a scientist and his experience with heavy mass don't have any business being in there. The Eyes and Facial features need to be phrased as complete sentences (really, everything should always be complete sentences). The ears, you need to keep in mind, would not have been neko type ears at any point in his life before being a Minkan unless he was a male NH-29, for example. Yamataian bodies, and the Geshrins before them were human type bodies, with normal human ears. If you want to keep that bit, feel free, just mind that it's a conscious choice, not something he would have "genetically". Same thing with the hair as before, complete sentences please.
Distinguishing characteristics actually aren't bad, though I'd like to see a quick sketch of the tattoo just for reference if you can at some point. Just for a visual cue, since the description doesn't really give me an image in my head.
History
We've already had the talk about Abwehran stuff in backgrounds, and I don't particularly enjoy repeating myself. But since it's there... Abwehrans had literally no contact with the primary nations until VERY recently. It is impossible for his brother to have died on a planet (Unapproved, too) in a nation which hadn't been discovered yet, let alone to have died in an accident there close to two decades ago. (We'll leave out the fact that this information is in the Psychological section, not History).
Psychological Characteristics
As hinted at just above here, effectively none of the psychological stuff you have listed there IS psychological description. This section isn't history, it's the internal workings of the character's mind. What drives him in day to day life? How does he interact with others? What makes this character unique as a PERSON? As I mentioned before
Sheeply's character creation guide features a wonderful guide for personality, and is a good way to learn to write cleaner, more thought out and original.
History
Definitely some work needed here. I get almost literally nothing about the character out of the history. Nothing of import happened until he got accepted to college, and then nothing interesting at all all of the way through the end of college? This is your opportunity to justify anything in the rest of the submission, and there's literally nothing here. Without knowing the plot, I can't say for sure, but is he joining the military? If so, he'll have been in for about six months, what with basic training and the various other processes.
It also needs to be pointed out that the Yamataian college system works a lot like the modern college system, so far as I know, where he would be studying any advanced subjects a good bit into his time in college, that wouldn't have been his primary study early on. It's the whole idea of you'd go for a Bachelor's degree in general sciences, or, for example, biology, and THEN you'd go back for a Master's degree in Advanced Xeno-Science as a specialty. You have to learn the basics before the advanced stuff, after all. That might affect his age here, if you intend him to have that level of knowledge, since it's rare for people to finish a Master's degree that fast, ESPECIALLY in the hard sciences where there is a LOT of practical and time consuming activities to slow the process down.
Also, I figure I should clarify this since you mentioned it in here. A mother's genetic structure has nothing to do with their child's makeup unless they want it to in Yamatai, and especially when it comes to nekos. Unless he was born a male neko (which is RIDICULOUSLY rare, and would take a
lot of justification), his ears would be completely normal unless he WANTED them to be neko ears in the Minkan body. Geshrin and Yamataian bodies don't have neko ears.
Skills
In communications, unless he ends up being a neko, you should use a term other than youngling, since that term is used specifically for neko children in this setting. The part about him being persuasive needs to be removed, that's opinion, not skill, whether he's persuasive or not depends on the arguments he makes, not how persuasive he thinks he is.
In biology, again, the first sentence is only barely relevant, the second sentence belongs in the personality section, and the last sentence isn't really accurate, as saying he professed in xeno-biology implies he actively TAUGHT the subject. Overall, there's no actual information about what his biology skills are.
Medical and Science is WAY out there. Medicine is an INCREDIBLY complex and in depth direction to study. If he went with medicine in any depth really big enough to get skill (in college) than he wasn't doing anything else. Medical school is difficult, long, and exhausting. On top of that, again, first sentence doesn't belong here, and second sentence doesn't really say anything. Does he know first aid? Or is he a real doctor? Does he know how to stitch someone up, or could he straight up perform surgery?
Knowledge skill needs to either be removed or completely rewritten. That skill deals with mental exercises, like the ability to retain a greater percentage of what he hears, or knowing the intricacies of the law. it would have VERY little to do with science skills (knowledge pertaining to those is in that skill section, not knowledge).
Chemistry, again, needs more detail on what the actual skill is. That's a VERY broad field. Is he capable of mixing materials out of their base ingredients? Just following recipes? Creating things from scratch purely based on intuition?
Mathematics needs more specific information as well. Most of what you describe him using it for sounds more like Astrogation and Stellar Cartography type activites, which would fall under Starship operations, not Mathematics. Mathematics, in SARP, just as in real life, refers to the pure math side of things, like trigonometry, statistics, accounting... The pure math side of things.
Humanity seems like an odd skill based on the rest of his description. Psychology and the like are VERY separate from the primary sciences, as they are based more on opinion and theory than numbers and provable data.
Overall? Give him some skills outside of science. He's too heavily focused, and it definitely feels like you're going for a "Great at ALL THE THINGS" vibe here on anything that might have to do with xeno-science, which, on its own? Is a HUGE field, that would take several decades to really get good at even a few of the major disciplines. Scientists tend to pick a focus early on and stick with it, because you can't really excel at multiple fields without a literal lifetime of effort.
Past there, I just don't get any feel for the character. Every skill he has (with the possible exception of communication) is directly derived from his schooling. Does he have no hobbies, no skills outside of his school time? Even more than that, does the plot you want to put him in have any required skills? Because if so, you'll have to remove some of what is there to fit those in too.
Inventory
You don't need to include the scanner in the inventory if you're going to include the science kit, since it's included. However, keep in mind that scanner and kit are ONLY available to SAoY personnel, not the general market. Unless your character is a member of the Yamataian military, they have no access to that kit. If you're in the Yamataian military, you need the full standard issue equipment, and you need to rework the skills as well.
You also need to deduct the value of any items you get outside of basic items justified by the history from your starting finances. Guns like the Peashooter are EXPENSIVE, that's not the kind of thing you can really snag for free.
Overall
Good start to the character, but there is still a decent bit of work that needs to be done before the character is ready to be approved. The desired plots section definitely needs to be added so we can put the proper GMs in touch.
While you're building your character, his history should include everything that has already happened, not anything that has yet to pass.
