Kladara jumps off the tree and decides to tell his sensei everything he knows about Sharingan .
Sharingan (Copy Wheel Eye) , is known to be one of the three great Dojutsu , along with Byakugan and Rinnegan . This eye mostly belongs to the Uchiha Clan . Sharingan originated from Kaguya Otsutsuki , which gave birth to chakra . Hagormo and Indra are the first ones to have sharingan .
Sharingan is able to see chakra points/flow . Sharingan can let the user see through mist , or tell wether someone is under a genjutsu or not . It is hailed as the most perfect Dojutsu to copy techniques and Taijutsu . Sharingan can predict the movements the opponent is going to do , so the user can dodge them perfectly . Sharingan has three main stages and two extra ones .
1 Tomoe .
One Tomoe is the first stage of a sharingan eye . The user has to endure a hard training , which will result him fatigue . 1T gives the user the ability to see the chakra flow (This way one can tell if there are kage bunshins or not) . It can copy little techniques , and Taijutsu , but not as perfect as the upcoming stages . It gives the user more speed , and can see through D-Rank Genjutsu . Also , even if the user can predict the next move of an opponent , their body may not always dodge it , meaning that 1T doesn't improve your taijutsu .
2 Tomoe .
Two Tomoe is more developed than the first one . In this stage , the user is better in controlling the sharingan . The user is given higher speed , can copy more ninjutsu/taijutsu , and can predict movements . Also with 2T , the user can see the chakra flow/points more faster . In this stage , the user can see through c-rank genjutsu . The user can try to cast little genjutsus that can easily be broken .
3 Tomoe .
Three Tomoe is the final stage of a regural sharingan . Now the user masters the three stages perfectly . This means that it can copy more complicated jutsu , (Except Ice and Lava) . To get this , one must experience harder training . As I mentioned before , aside the fact that it can copy more Nin/Tai , it can also predict movements faster , and can be given the chance to counterattack , to guard without any damage , or even dodge in perfection . 3T Sharingan is known to have a strong genjutsu , and can hypnotize opponents (Like Obito/Madara did to Kurama) . In this stage , the user can see through B-Rank Genjutsu .
The two extra stages , Mangekyou Sharingan and Eternal Mangekyou Sharingan .
Mangekyou Sharingan .
Mangekyou Sharingan , or MS , is the second strongest stage .One achieves this power by witnessing a loved one dying , or killing a loved one yourself . In this stage , the user reaches high feats , such as strong genjutsu (Tsukuyomi) , strong attack (Amaterasu) and strong defense (Susano'o) . Now , the user is a lot faster to predict movements , not letting the opponent attack or even attack them without them noticing . It can copy stronger Nin/Tai in a high caliber . The user doesn't need handseals anymore to incerase the force and/or using genjutsu just by gathering Sharingan chakra into your eye .By overusing MS , you can go blind or total blind . In this stage , the user can see up to A-Rank and below Genjutsu .
Eternal Mangekyou Sharingan .
This is hailed to be the second strongest Dojutsu form (The first one being the Rinnegan) , and the strongest stage of Sharingan Dojutsu . Now , the user is perfects every aspect of Sharingan . You can use EMS as much as you want , and you don't go blind anymore . This power is achieved by stealing your siblings eyes .