This Clan is by BlueSapphire718 I hope you like it.
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Name of the Clan:

Gesen Clan

Nice name

Acquired Names of the Clan:
Clan of a Thousand Techniques -
This name was acquired when the first head of the Gesen Clan, Gesen Takao, copied a thousand techniques.

Amazing and it's the best way to get a nickname name for a accomplishment, cool.

Copiers of Techniques -
This name was acquired when the Gesen Clan showed their ability to copy other techniques, making them powerful foes.

Nice but isn't that just the Uchiha clan? The sharringan copies jutsus and is known for that so wouln't this be a copy of the Uchiha clan.

Meaning of Clan Name:
Gesen - A Thousand Techniques

Cool

Kanji:
芸千

芸 - Ge (Technique)
千 - Sen (Thousand)

Cool, I personally can't read Kanji but I think it looks cool.

Symbol:
The outline shape of an eye turned sideways with a circle in it, the entire symbol being either in black or white.

So is their a preferred color for it? I would suggest just making it a mixture.

Meaning of Symbol:
The outline shape of the eye turned sideways represents their Kekkei Genkai dōjutsu, while the circle represents the outline of their dōjutsu in their eyes.

Nice and sense color doesn't matter I would suggest making it maybe half black half white or some sort of combination.

Status:
Nearly extinct, due to nearly being wiped out by the Uchiha Clan during the Warring Era. Only a few Gesen are currently left in the world, most of them hiding their heritage in fear of the Uchiha Clan finding them again.

That is very unique and to be honest one of the best ways that I have seen a OC clan get killed and go into hiding. Good job.

Allies:
The Senju Clan -

The Gesen Clan allied themselves with the Senju Clan, in hopes of defeating the Uchiha Clan in their rivalry of their dōjutsu. Senju Rinyama and Gesen Ryūchi, the respective leaders of the Warring Era during their alliance, swore a pact to protect each other's clan when they first became allies. Still, not much is known about this alliance or the benefits of the alliance.

Oh so they were rival clans and that's why they had similar jutsus. Now that I know that, it's cool but maybe there are some settle differences in the clan's way that they copy a jutsu. Something to make it a little different.

The Hatake Clan -
When the Hatake Clan and the Gesen Clan first met during the Warring Era, it began in a common interest of gaining leverage for their clan. Not much is known about their alliances, but it is believed that they came together because of their beliefs of fighting for family.

Nice and their reasons for being allies is great as well. For anyone who don't know, yes there is a Hatake clan. Kakashi is obviously part of it.

Hair Colour(s):
Black, grey or dark navy hair are the often common hair traits of the Clan. Brown and white-haired members were rare, due to having a few mixed blood between the Gesen, Hatake and Senju members.

That's cool but does it also depend on the clans as well? Like I know in OCs some people just make the mom have brown hair while the dad has black hair and the kid has the color of the rainbow. So does this happen with this clan like if a black or brown haired person from the Gesen and Senju got together would a child still somehow have white hair?

Common - Black, Grey, Dark navy
Rare - Brown, White

Basically what I said above.

Skin Colour(s):
The skin tone of the Gesen Clan are mostly tanned or peach skin skin, but some Gesen Clan members had pale peach skin.

Not much of a difference but does it change if they are in the sun or not?

Common - Tanned, Peach
Uncommon - Pale peach

Same as above

Eye Colour(s):
Most of the Gesen Clan have dark grey eyes, often confused as black in most cases and being related to the Uchiha Clan, and white eyes, confused to be related to the Hyuuga Clan. However, brown and blue eyes are often rare among the Clan, but most brown/blue-eyed members are often blind.

This is all really good but the same matter as with the hair. I just want that question to be answered. Other than that this is looking pretty good, however, all Hyugas have white eyes and all Uchiha have black eyes. So why does this clan have both colors? Why isnt their only one? How would brown and blue occur anyway? These are just questions that need answers.

Common - Dark grey, White
Rare - Brown, Blue

Same as above.

History of the Clan:
The history of the Gesen has been lost for several generations and years since the Warring Era. However, it was believed by several historians that in the beginning of history of the Gesen Clan, Gesen Takao, the first Clan Head of the Gesen Clan, had sipped the blood of a Uchiha that was the descendant of Amenomi, the first Uchiha and daughter of the Rikūdo Sennin, and had his eyes transformed into the Kekkei Genkai now known as the Michibu.

That's cool but sipping on someone's body doesn't give you their traits or talents. Using regular human anatomy that wouldn't happen especially if the consumer has already hit the age of no longer growing. Maybe instead of drinking blood like a vampire how about using the art of fusion and combination. Took a eye from a uchiha, took a eye from a senju, took out his own eye and experiment. After forming a all new kekkei genkai put the eye back into his socket and mixed it into his own DNA meaning now his off spring would get the eye. This is another approach to it that can be used.

The Gesen had been known for their terrifying dōjutsu to copy almost any Jutsu or technique, making them deadly rivals against the Uchiha Clan, who are known for their Sharingan. Battle after battle, and allying themselves with the Senju and the Hatake, they slowly began to overpower the Uchiha. Many Gesen rose up to fame during these battles, especially Gesen Chihiro, known as the "Copying Slaughterer", for her savagery and her coldheartedness of slaughtering several Uchiha and taking several of their Jutsu against them.

I just like the fact that you said savagery. But over all this is pretty good and makes sense. The uchiha would lose if more than one clan goes after them.

Again, none is much known about these times.

It's fine, the information here is good enough.

They were eventually ambushed and slaughtered in their own compound by the Uchiha, the few survivors fleeing their home and into several nations, taking on different identities in hopes that the Uchiha Clan would never find them again. Only some Gesen, taken in by the Senju Clan, were taken to be apart of the new village of Konohagakure no Sato, and the rest remained hidden throughout the world today.

Nice, but if this clan was so strong and the uchiha was down in numbers than how did the uchiha clan kill them? They can copy jutsus but don't forget actual moves as when Sasuke copied Lee. Plus this seems like a fighting clan so they would have more numbers or ninjas so it doesn't really make sense oh how the Uchiha clan would win without help.

Traditions of the Clan:
Not much known about the Gesen's traditions, but they valued loyalty, inner strength and comradeship over what many clans believed them to be. They worshipped several Kami (Multiple spirits in Shintoism) and held several small festivals for them in honour of Gesen Takao, who was believed to call several Kami to help him during battle, but many do not know for sure.

So this tradition is lost in history right? That is actually a good way to put it and the ideas of the tradition is really good.

Kekkei Genkai:
The Gesen Clan's Kekkei Genkai is called the Michibu, the name that has the meaning of "Copy Within View". Shown in their eyes as a dōjutsu, they use this Kekkei Genkai to copy multiple jutsu and techniques by "fully experiencing it."

When you say fully experiencing it does that mean that the jutsu was used on them, they were hit by it, they saw it, or they learned a part of? This is just a question that needs a answer. Nothing is wrong with this but I just want a answer.

The Michibu dōjutsu has an outline of a white circle with a white dot in it on the dark grey eyes, and an outline of a dark grey circle with a black dot in it on the white eyes.

That's a pretty cool design and I can picture how it looks. Nice

There is a final stage that evolves the Michibu, the Michibu Kuon, however, only two have unlocked it.

Oh that's very interesting how only some of the clan members can get the second stage. Not to mention it can set one OC apart from the other.

Bu - Copy
Chi - Within
Mi - View

This is really cool.

Hiden:
N/A

Ok

Current Clan Head:
There is no clan head, as this clan is scattered across the nations.

Ok, and that makes the most sense as well.

Notable/Important Figures of the Clan:

Gesen Takao -
The first Clan Head of the Gesen Clan, as well as being the only Gesen to copy to around a thousand techniques, thus earning him the name of "The Thousand Technique Copier". Not much is known about this man, but he was the first one to name and lead the Gesen Clan.

Nice, and I like how even though the people won't know him you still let the reader know him. Good job.

Gesen Chihiro -
Also known as the Copying Slaughterer. A fierce and savage woman, Chihiro used to be one of the most powerful shinobi that the Gesen Clan had, and was one of the first two people who activated the Infinite Michibu. She had named the awakened stage of the Michibu, the Infinite Michibu, after the infamous Infinite Tsukuyomi (An unhealthy obsession, that a later descendant, Natsuki, ended up renaming it to the Michibu Kuon).

Ok, because i was about to ask how did the name change.

Gesen Takumi -
One of the last known members of the Gesen Clan. Father to Natsuki and loyal to Konohagakure no Sato, Takumi was a feared man when he started out as a shinobi. He died from blood loss when he battled the missing nin, Aburame Mushima.

Oh, that's interesting the fact that he actually died in battle is also a touch that you don't see in many OC clans or OCs in general.

Uzumaki-Gesen Natsuki -
One of the last known members of the Gesen Clan, and a Rōkunin known as the Akuma no Fūinjutsu (Literal meaning; Demon of Sealing Techniques). Natsuki is only half Gesen, due to her mother being a Uzumaki, but she still had full potential in unlocking the Michibu, and later on, the Michibu Kuon.

Cool and that reminds me, can only full blooded members unlock the second stage or can any member of the Gesen clan unlock it?

Other Information:
N/A

Ok

Oh, yes, genre: I wanted someone to review this and help me fix some mistakes

And I thank you for coming to me for help. Anytime you need help with your Clan or OC just send me a message.
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Final Analysis- There isn't really anything wrong with this clan but it does have a lot of questions. Many of them are above so I recommend answering those. Other things include the appearance of the eyes and the way that a member of the Gesen clan gets the rare color. It's not made clear on how they get it or what can trigger it so that also needs answers. The last thing that I want you to look into is my suggestion, the one about how the Machibu eye and sipping blood. I would recommend just looking it over and considering it if not getting a idea from it. Other than that this clan doesn't have anything wrong with it. Thank you so much for letting me review your Clan, it was a honor.
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