Fugaku & Sasuke Uchiha

[lndra]

He may or may not know about the rinnegan. Remember, Fugaku is only known to have had 3 tomoe sharingan, so he probably couldn't have read any further than the info about how to gain the mangekyou sharingan and about controlling Kurama. I think you need mangekyou to decipher the parts about getting eternal mangekyou and rinnegan. The parts about Kaguya and Hagoromo and the juubi and things of the like probably require the rinnegan.

Didn't Sasuke read that it with a 3T tomoe or lower?

 

[Endles Waltz]

and what did he do to the uchiha future?

Revive it with a gorgeous woman from a regular family with the kindest heart who happens to be the best and strongest medical nin on Earth.

 

[chaos control]

Didn't Sasuke read that it with a 3T tomoe or lower?

He was only able to read a bit of the tablet. Here is how it goes:

Sharingan reads some of the tablet
Mangekyou sharingan reads more of it.
Rinnegan reads it all.

Now, when Sasuke and Itachi were talking just before their final battle, they discussed the mangekyou sharingan and Sasuke noted Itachi's deteriorated vision. After noting this, Sasuke said "So that's the price you pay for the power to control the kyuubi". After hearing this, Itachi responded "Ah, so it seems you read the stone tablet after all." Note that at this point in time, Sasuke did not have mangekyou yet. Therefore, this dialogue between the two implies that reading the tablet with a base sharingan reveals info about obtaining the mangekyou sharingan as well as its ability to control Kurama. Later dialogue between the two however implies that the info you can read with a base sharingan does not give you the info about eternal mangekyou sharingan or rinnegan. I can tell this because after the previously mentioned discussion about Itachi's fading vision, Itachi went on to reveal to Sasuke the story of Madara and Izuna and about the process of gaining the eternal mangekyou sharingan. Sasuke's reaction to the story implies that Sasuke didn't know this information about the EMS, which in turn implies that the information that he read with a base sharingan did not detail any information about EMS.

As we know, rinnegan is a higher dojutsu than EMS. Therefore, if reading the tablet with a base sharingan doesn't give you any info about EMS, it definitely doesn't tell you about rinnegan. Fugaku only had a 3T base sharingan. Therefore, he couldn't have read anything about the rinnegan from the tablet.

Now it is possible that he may have simply heard of the rinnegan by word of mouth of ancestors perhaps. Perhaps he had even heard of the sage of the six paths. After all, even Kakashi and Jiraiya (two non Uchihas) had heard of Hagoromo and the rinnegan. Therefore it is possible for Fugaku to have at least heard about it, but I doubt he read about it from the tablet or ever personally came face to face with it.

 

[King Of Pop]

Revive it with a gorgeous woman from a regular family with the kindest heart who happens to be the best and strongest medical nin on Earth.

:lol but you would see some getting mad over it as if sasuke is not allowed to choose who he wants

 

[lndra]

He was only able to read a bit of the tablet. Here is how it goes:

Sharingan reads some of the tablet
Mangekyou sharingan reads more of it.
Rinnegan reads it all.

Now, when Sasuke and Itachi were talking just before their final battle, they discussed the mangekyou sharingan and Sasuke noted Itachi's deteriorated vision. After noting this, Sasuke said "So that's the price you pay for the power to control the kyuubi". After hearing this, Itachi responded "Ah, so it seems you read the stone tablet after all." Note that at this point in time, Sasuke did not have mangekyou yet. Therefore, this dialogue between the two implies that reading the tablet with a base sharingan reveals info about obtaining the mangekyou sharingan as well as its ability to control Kurama. Later dialogue between the two however implies that the info you can read with a base sharingan does not give you the info about eternal mangekyou sharingan or rinnegan. I can tell this because after the previously mentioned discussion about Itachi's fading vision, Itachi went on to reveal to Sasuke the story of Madara and Izuna and about the process of gaining the eternal mangekyou sharingan. Sasuke's reaction to the story implies that Sasuke didn't know this information about the EMS, which in turn implies that the information that he read with a base sharingan did not detail any information about EMS.

As we know, rinnegan is a higher dojutsu than EMS. Therefore, if reading the tablet with a base sharingan doesn't give you any info about EMS, it definitely doesn't tell you about rinnegan. Fugaku only had a 3T base sharingan. Therefore, he couldn't have read anything about the rinnegan from the tablet.

Now it is possible that he may have simply heard of the rinnegan by word of mouth of ancestors perhaps. Perhaps he had even heard of the sage of the six paths. After all, even Kakashi and Jiraiya (two non Uchihas) had heard of Hagoromo and the rinnegan. Therefore it is possible for Fugaku to have at least heard about it, but I doubt he read about it from the tablet or ever personally came face to face with it.

Makes sense.

Sasuke also could have made the connection on the Mangekyo Sharingan activation because Itachi tried to seduce him into killing his best friend (Naruto). But after their fight, Sasuke noted that he wouldn't strive to get power through Itachi's way.

My question is that the Rinnegan itself doesn't seem to be something hidden, or unknown of. I don't remember on how much of this was canon, but when Nagato revealed his Rinnegan to Hanzo, he immediately recognized the Dojutsu and even said its name. That begs the question, if he had such knowledge on a powerful Dojutsu, than why not the leader of the Uchiha Clan at the present time? It's all speculation, but such information is barely explained in the Ninja World.

Granted we follow a character who barely reads a book, but still..