Kaisekigan

Kaisekigan (解析眼, Analytical Eye) is a unique  of the Kaiseki Clan. It is known for its ability of granting the user unparalleled insight into whatever they observe, giving them extremely high-octane visual prowess unseen in the Three Great Dojutsu. It is also capable of modulating itself and even other bloodlines, allowing the user to achieve a variety of feats.

Appearance
The Kaisekigan manifests within members of the Kaiseki Clan upon birth. It matures completely and permanently activates when the wielder is capable of comprehending at around age six. It takes the appearance of a lightish-red pupil. In some instances, circular lines and small rectangular blimps will appear in a unique formation around the eye, typically when the user is altering the dojutsu's field of vision or extending its range when in proximately to other wielders.

Abilities
The Kaisekigan gives the user hypercognition, allowing them to process untold amounts information at immense speed and allows the user to gain untold information within their surroundings by configuring the dojutsu to do so. What makes it different from other dojutsu is that it is capable of revealing a score of information about the target from observation alone, such as: Movement speed, electrical signals within the body, chakra natures, clan lineage, kekkei genkai, active and passive techniques, exc.

The user can configure the eye to see in a wide variety of ways: Sonar by having the body emit a sonic pulse 4 mHz times higher than humans are capable of hearing, allowing the user to see these unique sound waves and not be blinded by other sound waves. It can also "filter" what its looking at, enabling it to see through objects with uttermost clarity while giving it untold penetrative sight. In configuring itself, it is able to effectively see chakra within the body's chakra pathway system and outside the body to a much greater degree than the Byakugan, and even detect and track other types of energy, such as heat, sound and kinetic energy. Upon awakening the dojutsu, it is capable of seeing a default maximum of 5.6km (3.5 miles) and the user can narrow or widen their field of vision from sixty degrees to 180 degrees. When narrowing their field of vision to 60 degrees, the maximum visual range increases three times. An unusual trait members of the clan possess is the ability to extend their vision by being within close proximately to one another. Its most useful supplementary ability allows it to analyze and hijack a targets eyes, enabling the user to extend their vision and ocular prowess without the target knowing. This enables them to gather impressive intel on opposing forces long before they arrive.

The most terrifying offensive ability it possesses is the ability to analyze, disrupt and disable the use of other kekkei genkai abilities. It achieves this by identifying the source of the kekkei genkai, such as unique chakra the body produces to make it or by using a complex sealing formula to alter the bodies influence on the kekkei genkai, altering various attributes of the bloodline and its abilities disabling use of them partially or all together. During the War of Yoshigakure, the Kaisekigan was used by the Kaiseki Clan to slow the perception of the Sharingan to normal eye levels before the Uchiha Clan arrived, causing the Uchiha to rely on battle tactics and strategies they weren't used to.