While the most famous of the dojutsu may be the Sharingan, the Byakugan, and the Rinnegan, (plus all associated offshoots), there are others. Did you really think there were only three? The Kurogan, the Akumagan, the Soshigan, and the Sutomuburingan. Each has a second stage, a double-edged blade. No two dojutsu can create a more powerful hybrid. For when a dojutsu activates, it becomes a permanent part of them and will be passed onto their offspring. The other dojutsu will remain in the genetic code. But if you activate one dojutsu, you cannot activate the others, even if they are in your genetic code. Each dojutsu has a strength and power that rivals the others.

The Kurogan, dojutsu of the now-extinct Juyoku clan, capable of seeing gravity as 'waves' in the air, and allowing the user to tell the relative weight of something, permitting them to accurately manipulate gravity to permit the object in question to do with as they wish. In its passive state, after the awakening of the dojutsu, the eye, including the sclera is completely black, which is where it got its name. When active the iris becomes brilliant pink. The Uchugan, is the second stage of this dojutsu. It is capable of creating tiny black holes, allowing the user to make an object, living or not, the literal center of gravity without increasing their mass, and it allows the user to create portals, permitting them to teleport. To gain the Uchugan, you must place yourself in danger to save someone else. Gaining of the Uchugan changes the passive state to have white dots resembling stars. When active the iris remains the same as the first stage, but with the white flecks. With use of the Uchugan, the vision of the wielder warps, to the user, it is like looking at the world through a pair of those silly glasses with the distorted lenses. If the wielder so wishes, glasses are effective at temporarily letting the user see clearly.

The Akumagan, dojutsu of the long extinct Mirudin clan, capable of seeing 180 degrees, but it can increase with experience and practice. It grants enhanced reflexes that could easily stand up to the Sharingan, and it can allow it's user to sense and see demonic chakra only. It can be awakened by exposure to demonic chakra, easiest way for that to happen is to be attacked or healed by a jinchuuriki. In its first stage, it appears as a yellow iris with a slitted pupil. The second stage of this dojutsu is the Chimamire Akumagan, and it is only able to be awakened by jinchuuriki, as it requires a greater amount of demonic chakra to awaken. It allows for control over a special kind of white and blue fire, almost similar to Amataseru in the Mangekyou Sharingan. It also permits a higher sense of chakra, the wielder becoming almost a sensor when using the eye. The Chimamire Akumagan appears blood red, looking quite similar to the eyes of a Kyuubi jinchuuriki when they use the fox's power. As you use the eye, your personality becomes split, the second personality being a dark, evil, and generally demonic personality. The user becomes almost like a jinchuuriki on their own, and it can drive the person insane, having two dark and evil voices in their head. Avoiding this is only possible by being able to use all of the user's biju's power. The wielder must defeat their dark side and their dark personality. None have achieved this yet, as no one has reached this level.

The Soshigan, dojutsu of the currently extinct Kantere clan, capable of seeing the molecular makeup of objects, and allows the user to break them apart. It includes seeing through objects, such as seeing through skin, muscle, and fat to see the blood of a human or animal. Active, the user's iris is split in half, the top half is dark navy blue, the other being light yellow. The pupil appears as a cross. As with the others, the Soshigan has a second stage, the Mayonaka Soshigan. It appears very similar to it's first stage, but has a star pupil. It allows the user to transmute elements into others, copy elemental jutsu, and transmute elemental chakra into other types. Unlike the Sharingan, the Mayonaka Soshigan requires its user to work out and master the jutsu on their own time. Jutsu can be from the sub-elements like Mokuton and Hyoton. To obtain the Mayonaka Soshigan the wielder must save someone very close to them, by degrading an enemy. The Mayonaka Soshigan comes at a price however, the user's body begins to degrade, beginning at the fingertips and spreading up the arms. Skilled users of this dojutsu can put each other back together in a sense, but users cannot do it to themselves. There is one other morph of the Soshigan, the Rekka Soshigan. It appears the same as the other two morphs, but has a crescent moon as the pupil. Regarded as a 'dark' Dojutsu, the Rekka Soshigan can steal chakra and abilities. Including other dojutsu. For example, stealing the Sharingan will exact a heavy price, but will result in increased perception. Ten of a single dojutsu clan (from different people) will cause the eye of the Rekka Soshigan user to change, resembling the dojutsu stolen. More people's dojutsu copied, the more the eye resembles the dojutsu in question. The cost for this morph is degrading as well, but the price depends on what was copied. How a user keeps themselves from dying is different as well, linking to how the Rekka Soshigan is gained. The Rekka Soshigan is gained by the wielder killing a family member by degrading them. Linking to this, the only way to prevent death by degrading is degrading other people's flesh to replace your own. A user may only have one or the other of the two morphs, Rekka, or Mayonaka.

The Sutomuburingan, dojutsu of the currently extinct Raiu clan, capable of summoning storm clouds and calling down natural lightning, and calling rain. When active, the first stage of the Sutomuburingan appears as a grey iris and pupil with what appear to be flashes of lightning happening occasionally. Just as with the others, there is a second stage of the dojutsu; the Haikaigon. When active, the Haikaigan appears to have the same grey iris and pupil, but has what appears to be a hurricane swirling around inside it. The Haikaigan is capable of summoning tornados and hurricanes and forcing the air to either be charged with electrons or the opposite, causing the surrounding area to either be very conductive to lightning jutsu or making it very difficult to do lightning jutsu. To awaken the Haikaigan the user must be struck with a sufficient amount of voltage, either by a natural lightning bolt, or a sufficiently powerful lightning jutsu like Chidori. As with the others, this power comes with a caveat. The user's body begins to turn to pure energy, because of the build up of energy, giving them the high risk of breaking apart and never collecting again. The use of fuuinjutsu seals such as containing seals is advised. A temporary fix is lightning jutsu, as it discharges energy, temporarily stabilizing the user. The Raiu clan was known for implanting metal in their bodies to give them more time before they needed to discharge. They often discharged into the ground, or did a constant stream of high powered lightning jutsu.

The Juryoku clan was renown for their ability in the skies. They reached their peak in the warring clans era, then were abruptly wiped out by Madara Uchiha, killing all but the few who had been with the Uzumaki at the time, as the two clans had an alliance, and cross married often. All survivors of the clan moved to the Uzumaki compounds, hiding from the world. Kushina Uzumaki was just one of many Uzumaki children with Juryoku blood in her veins.

The Juryoku clan were not the only clan who had an alliance with the Uzumaki. Anciently, the Mirudin clan also had a treaty with the Uzumaki, and over time, the two clans merged, though few Uzumaki have ever awakened the Akumagan. Kushina, like most Uzumaki, also had Mirudin blood in her, but never awakened the Akumagan.

The Raiu clan were slowly whittled down over the years, ending with a final male, who married the last Kantere. Their child, never knew his parents or last name, and now goes by Namikaze Minato.

The Kantere clan were very nearly wiped out when several clans, including the Hyuuga and Yamanaka clans, attacked their compound. Few got away, but one lone female met, and married a Raiu clan boy, and they had a child, then died on the battlefield, defending the last of both their clans, Namikaze Minato, as he was known in Konoha.

(A/N) Sorry, it's so horrendously short, I couldn't really make it any longer. This is me taking up a challenge from Ntraveler, hope you enjoy. This is mostly an exposition chapter, and I was required to have it cause of the challenge. No, you will not find any of the Dojutsu anywhere, as they are my personal Original Dojutsu. If you have questions, I will attempt to answer them, most likely in my next update if you're a guest. I'll reply via PMs if you're a person I can to that with. I'll only answer each question once in the story, but will state all those who asked that question. Welcome, to Naruto and the Four Dojutsu.