Uzushio is a very small village.
The envoy sent with Mito-obaasan stayed there. No Uzumaki should have to live alone and without allies. Then there were the terrible storms. The waves were so tall that they could barely see the top and the thunder crashed so loudly that it was hard to even sleep. The water flooded the island and everything was absolutely wrecked. If it hadn't been for the seals every Uzumaki that had ever lived laid on the island, the people would have had next to no chance of surviving.
The storm's children destroyed by the storm itself. The height or irony.
At least they had all had some form of training.
There aren't very much of them, there never have been so everyone has to be a Shinobi. If Uzumakis are to survive, they must all be powerful enough to do so. The other villages think they have some very advanced seals that they protect the civilians with for it is rare to see one. It makes sense. The civilians need not be put in unnecessary danger.
No Uzumaki would ever correct them.
They are all Uzumakis, born of Uzushio.
They are one - why bother with different names?
They are powerful but few.
It is better this way. They do not want to become too arrogant. Arrogance is dangerous but so is doubting your capabilities. This the closest to middle ground there is.
They are shinobi and civilians in one.
They have no choice. To survive, they must keep up the pretence. Even against Konoha, their supposed ally. The one who kept on taking and never giving.
Mizuki's Okaasan specialises in needles and senbon so she is a tailor. She is proficient enough to support the entire island.
Her father - before he died - was good at concealing weapons. That is why he took all of them down with him when he died. He always had another trick. He made the designs for her mother to actually construct. Mizuki's job has always been seals.
Every child does the seals before specialising. It is their heritage and it thrums through their veins, unrelenting and strong. Many choose to specialise in a form of Kenjutsu. After sealing, it is the most important thing the Uzumaki are known for - their blades.
No one knows what Mizuki's choice will be.
Kushina - her best friend, her partner in everything - has chosen chakra chains. She will apprentice under the rope masters - those that help build ships and secure things. The fishermen too - to create traps. Perhaps even the hunters. If she manages her hair technique right, she may even be able to use it in that aspect. There are so many potential senseis on the island.
Whatever Mizuki chooses, Kushina and her will find a way to combine. Somehow. Uzushio shinobi come in pairs. That is simply the nature of things. They do not have enough people for larger groups like Konoha and they refuse to limit themselves to one sensei. Everyone can and does teach them things. Mizuki and Kushina cannot be separated - not that any of their family will try.
Mizuki's Okaasan and Otousan were a pair and her mother was hit hard by his death. She holds on for Mizuki and her sisters who have already lost too much to lose her too. It is common for pairs to end up together.
Mizuki has already told Kushina that she doesn't think she can love her romantically but she can do everything else. Kushina simply embraces her and tells her that she has enough love for them both. After that, Mizuki gains her first true partner in a romantic sense. Well, sort of. Mizuki can't really do the whole 'Romantic Love' thing.
Mizuki decides it's time to trust someone else for once and tells Kushina, her partner, of her extra memories, of other lives and reincarnation. Kushina listens and plans. She loves Mizuki but she knows the girl struggles alone. The two of them are small, yes, but even small things can cause ripples.
Mizuki cries onto her and for the first time, Kushina is struck by how much she feels for the girl. They are only thirteen but shinobi die young and Uzumakis are practically endangered. The world fears them, hates them. The world does not love Uzumakis so they must love each other. Again, they have no choice. It's why everyone is a cousin, an aunt, an uncle, a grandparent and so on...
Uzumakis are wild, uncontrollable as storms but they too can be stopped. The only way to survive is together.
They elect their leader but they do not follow blindly.
There are too few of them to be destroyed for simple mistakes.
If a child is born to an Uzumaki, it is a child of Uzushio no matter what.
This is another reason they are not liked by others, even their brother village - Konoha. They understand the value of equality. When you are just as likely to be killed by a man as a woman, by a child as an adult, by someone unknown as one with a great reputation, what is the purpose of holding yourselves back? Konoha do not allow their female shinobi to be front line fighters. They call them kunoichi. They make it difficult for men to be medics. Men are to be the first line of defence so are not taught the valuable things like disguise and seduction.
It is different in Uzushio. They are not taught how to fight but how to survive.
Mizuki refuses to eat meat and fish so she learns and teaches how to scrounge in different environments. They respect her decision but she must bear the responsibility for it. When she begins to struggle and asks around for help, they are content she has understood. Kushina and Mizuki are to make their own decisions, bear the responsibility and be able to swallow their pride or think of asking for help when necessary.
When the world hates you, you must be wiser for it.