BYAKUGAN
And now, to prove my insanity, I present to you thorough explanations of how Byakugan and Sharingan might work if they were real. Mind you, this is just my opinion as a scientist/otaku, so don’t take this too seriously- this is supposed to be as entertaining as it is informative, not a term paper.
Now, Byakugan is the Hyuuga’s bloodline limit, which consists of an all-white eye that enables the user to see 360º (except for one blind spot at the back of the neck), see through solid matter (obviously, as 360º vision would require seeing out of the back of one’s skull), and see Chakra, which is for the most part usually invisible.
Negi using his Byakugan
Alright, now it took a lot of research and spending two hours talking to people smarter than me, I’ve decided that Byakugan IS in fact, theoretically possible. Theoretically.
First of all, let’s begin with the ability to see through things. After much deliberation, I actually found a way for it to maybe be somewhere close to a little bit conceivably possible. That is, Byakugan enables its user to see so precisely one can perceive matter on a quantum scale. Specifically, to be able to see not only individual atoms but the space between them- to the point that with enough focus one can see straight through the very matter an object is composed of.
It’s actually not all that unreasonable, seeing as the eye can detect a single photon of light, I bet with the application of chakra that could be amplified to subatomic levels.
One can assume that this is possible only due to the flexibility of chakra, which I unfortunately cannot gauge the limitations of, as it does not exist scientifically and therefore cannot be measured. Let’s just hope that it works this way, shall we?
Now, you would think that with that out of the way, seeing 360° would be easy to explain, but its actually what took so much time and effort. Now, in order for an eye to be able to see 360°, the pupil would have to take up almost the entirety of the eye, with just a small portion being reserved for the retina as well as where the optic nerves are located.
This would also be the actual blind spot, whereas in the manga it states that the blind spot is behind the first thoracic vertebrae. Minor technicality. Now, since the pupil is what takes in light, for it to extend to the majority of the eye would mean it takes in a lot more light (obviously), which would make the eye extremely photosensitive. This isn’t actually a good thing, as anyone who’s looked directly into the sun can testify. Now, one possible way to overcome this is with a second eyelid, like cats have. But, the eyelid can only cover half of the eye, plus the question of whether the visual information received through the back of the head would be photosensitive. So, we can probably rule out the eyelid theory. The only other way I can think of is if the chakra being focused in the eyes during the activation of Byakugan protects the eye, perhaps as a shield, as well as expands the pupil to the level required for 360° vision.
Also, the eye would have to be perfectly round, as opposed to the normal eye’s egg-shape.

SHARINGAN
Parts of the Eye
All right, now first let’s go a little more in-depth into what the eye is made of. The retina is a sheet of receptors at the back of the eye and is made up from two types of photoreceptor cells; rods and cones.
Rods detect light levels, which means they only pick up black and white images. In humans, these are more common near the edge of the eye. Now, there is only a limited number of space for rods and cones in the retina, so if you increase the count of one you have to decrease the count of the other.
Essentially, you must trade color perception for more detailed perception in black and white, which is largely what enables us to perceive motion.

Sasuke using his Sharingan
Does that make even the least bit of sense? No? Crap, all right, how about rods detect motion and cones detect color, is that more understandable?
Okay, now since you can’t really increase the sensitivity of a rod, you would have to increase the number of them. One way is to severely decrease the number of cones. Well, this won’t work without sacrificing color, and Uchiha’s don’t seem to be colorblind typically, so that must not be it.
Another way is to make the retina bigger, but in order to get to the level Sharingan is you’d have to have pretty damned big eyes.
Sharingan has Extra Pupils
Now, the obvious factor that sets Sharingan apart from normal eyes are the extra pupils, isn’t it? But how would that help? Well, if rods are more common around the edge of the eye, increasing the amount of pupils would increase the number outer edges to be lined with rods.
So, if the center pupil were devoted entirely to cones to retain a sense of color, then the space in the other pupils would be specifically for rods in order to get a better perception of motion, which is what the Sharingan is.

Sharingan has Extra Pupils
Now, the obvious factor that sets Sharingan apart from normal eyes are the extra pupils, isn’t it? But how would that help? Well, if rods are more common around the edge of the eye, increasing the amount of pupils would increase the number outer edges to be lined with rods. So, if the center pupil were devoted entirely to cones to retain a sense of color, then the space in the other pupils would be specifically for rods in order to get a better perception of motion, which is what the Sharingan is.
Now, the application of chakra to activate Sharingan could also be used to stimulate the portion of the brain used for memory retention, inspiring the user’s memory to become eidetic in nature during the activation of Sharingan, and thus giving them not only exceptional perception, but also the photographic memory required to be able to instantly recall any abilities seen.
But, this is the purely scientific view, which gives us no insight into the subliminal messages, so I also have an easier explanation.

A: Ability to see color.
1: Motion perception.
2: Copies all motion perceived.
3: Prediction motion- inferring through rational physics the action about to take place.
B: Ties pupils together for the ability to understand what one sees without getting confused. Without it, you would have three different eyes looking in three different directions and no idea what to focus on or what’s going on.
Hypnosis and Subliminal Messaging of the Sharingan
As for the hypnosis and subliminal messaging, that’s probably from watching the eye spin- have you ever had someone turning a spiral in front of you and speaking softly? It works if one knows what they’re doing, so I’m gonna chalk it up to possible- after all, I’ve said it before and I’ll say it again- I don’t know what chakra can do, so who’s to say it wouldn’t work?
That’s all I have on that, although I also have a report on the genetic probability of a Byakugan-Sharingan hybrid, but I’ll stop here for now.
Keep in mind, once again, that this I did for fun; I in no way, shape, or form own any of the characters or abilities mentioned here in this, nor even any of the pictures used. All of the report is purely hypothetical, and should not be taken literally.
Thank you for reading this, that is, if you could finish it without falling asleep or your mind exploding, and have a nice day.
And now, to prove my insanity, I present to you thorough explanations of how Byakugan and Sharingan might work if they were real. Mind you, this is just my opinion as a scientist/otaku, so don’t take this too seriously- this is supposed to be as entertaining as it is informative, not a term paper.
Now, Byakugan is the Hyuuga’s bloodline limit, which consists of an all-white eye that enables the user to see 360º (except for one blind spot at the back of the neck), see through solid matter (obviously, as 360º vision would require seeing out of the back of one’s skull), and see Chakra, which is for the most part usually invisible.
Negi using his Byakugan
Alright, now it took a lot of research and spending two hours talking to people smarter than me, I’ve decided that Byakugan IS in fact, theoretically possible. Theoretically.
First of all, let’s begin with the ability to see through things. After much deliberation, I actually found a way for it to maybe be somewhere close to a little bit conceivably possible. That is, Byakugan enables its user to see so precisely one can perceive matter on a quantum scale. Specifically, to be able to see not only individual atoms but the space between them- to the point that with enough focus one can see straight through the very matter an object is composed of.
It’s actually not all that unreasonable, seeing as the eye can detect a single photon of light, I bet with the application of chakra that could be amplified to subatomic levels.
One can assume that this is possible only due to the flexibility of chakra, which I unfortunately cannot gauge the limitations of, as it does not exist scientifically and therefore cannot be measured. Let’s just hope that it works this way, shall we?
Now, you would think that with that out of the way, seeing 360° would be easy to explain, but its actually what took so much time and effort. Now, in order for an eye to be able to see 360°, the pupil would have to take up almost the entirety of the eye, with just a small portion being reserved for the retina as well as where the optic nerves are located.
This would also be the actual blind spot, whereas in the manga it states that the blind spot is behind the first thoracic vertebrae. Minor technicality. Now, since the pupil is what takes in light, for it to extend to the majority of the eye would mean it takes in a lot more light (obviously), which would make the eye extremely photosensitive. This isn’t actually a good thing, as anyone who’s looked directly into the sun can testify. Now, one possible way to overcome this is with a second eyelid, like cats have. But, the eyelid can only cover half of the eye, plus the question of whether the visual information received through the back of the head would be photosensitive. So, we can probably rule out the eyelid theory. The only other way I can think of is if the chakra being focused in the eyes during the activation of Byakugan protects the eye, perhaps as a shield, as well as expands the pupil to the level required for 360° vision.
Also, the eye would have to be perfectly round, as opposed to the normal eye’s egg-shape.

SHARINGAN
Parts of the Eye
All right, now first let’s go a little more in-depth into what the eye is made of. The retina is a sheet of receptors at the back of the eye and is made up from two types of photoreceptor cells; rods and cones.
Rods detect light levels, which means they only pick up black and white images. In humans, these are more common near the edge of the eye. Now, there is only a limited number of space for rods and cones in the retina, so if you increase the count of one you have to decrease the count of the other.
Essentially, you must trade color perception for more detailed perception in black and white, which is largely what enables us to perceive motion.

Sasuke using his Sharingan
Does that make even the least bit of sense? No? Crap, all right, how about rods detect motion and cones detect color, is that more understandable?
Okay, now since you can’t really increase the sensitivity of a rod, you would have to increase the number of them. One way is to severely decrease the number of cones. Well, this won’t work without sacrificing color, and Uchiha’s don’t seem to be colorblind typically, so that must not be it.
Another way is to make the retina bigger, but in order to get to the level Sharingan is you’d have to have pretty damned big eyes.
Sharingan has Extra Pupils
Now, the obvious factor that sets Sharingan apart from normal eyes are the extra pupils, isn’t it? But how would that help? Well, if rods are more common around the edge of the eye, increasing the amount of pupils would increase the number outer edges to be lined with rods.
So, if the center pupil were devoted entirely to cones to retain a sense of color, then the space in the other pupils would be specifically for rods in order to get a better perception of motion, which is what the Sharingan is.

Sharingan has Extra Pupils
Now, the obvious factor that sets Sharingan apart from normal eyes are the extra pupils, isn’t it? But how would that help? Well, if rods are more common around the edge of the eye, increasing the amount of pupils would increase the number outer edges to be lined with rods. So, if the center pupil were devoted entirely to cones to retain a sense of color, then the space in the other pupils would be specifically for rods in order to get a better perception of motion, which is what the Sharingan is.
Now, the application of chakra to activate Sharingan could also be used to stimulate the portion of the brain used for memory retention, inspiring the user’s memory to become eidetic in nature during the activation of Sharingan, and thus giving them not only exceptional perception, but also the photographic memory required to be able to instantly recall any abilities seen.
But, this is the purely scientific view, which gives us no insight into the subliminal messages, so I also have an easier explanation.

A: Ability to see color.
1: Motion perception.
2: Copies all motion perceived.
3: Prediction motion- inferring through rational physics the action about to take place.
B: Ties pupils together for the ability to understand what one sees without getting confused. Without it, you would have three different eyes looking in three different directions and no idea what to focus on or what’s going on.
Hypnosis and Subliminal Messaging of the Sharingan
As for the hypnosis and subliminal messaging, that’s probably from watching the eye spin- have you ever had someone turning a spiral in front of you and speaking softly? It works if one knows what they’re doing, so I’m gonna chalk it up to possible- after all, I’ve said it before and I’ll say it again- I don’t know what chakra can do, so who’s to say it wouldn’t work?
That’s all I have on that, although I also have a report on the genetic probability of a Byakugan-Sharingan hybrid, but I’ll stop here for now.
Keep in mind, once again, that this I did for fun; I in no way, shape, or form own any of the characters or abilities mentioned here in this, nor even any of the pictures used. All of the report is purely hypothetical, and should not be taken literally.
Thank you for reading this, that is, if you could finish it without falling asleep or your mind exploding, and have a nice day.
