This article, Mangekyō Sharingan: Analysis, can be used freely without the creator's explicit permission.
Mangekyo Sharingan: Analysis allows a user of the Mangekyo Sharingan to gain information on a target(s) at an extremely fast pace. The user will send chakra to the part of the brain that anticipates movement and the part that creates the chemical used to activate a sharingan. Then the user's sharingan will start to glow a brighter red, the user then must stare directly at the target, but does not have to make eye contact. The user will be able to know how much chakra their target has, how much life force, nature types, nature transformations, current and past injuries, and be able to see their internal charka system. When used in battle it allows the user to read their opponents movements at an accelerated pace and pick up on areas that are best for attack.
Kekkei Genkai, Dōjutsu
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