What are the key events in Itachi Uchiha's real story?

One of the key events was the Uchiha clan's planned coup which led Itachi to make the extreme decision of wiping out the clan. His encounter with Obito Uchiha, who helped him in the massacre, was significant. Then, his time in the Akatsuki where he carried out various missions. And of course, his numerous confrontations with Sasuke which shaped both of their fates.

The most important event was him killing his clan. This changed everything for him and Sasuke. Another one was joining the Akatsuki. It put him in a new and dangerous situation.

One of the main events in Itachi's true story was the growing unrest within the Uchiha clan. Their dissatisfaction with the village led to plans for a coup. Itachi, seeing the potential disaster, took the drastic step of eliminating the clan. After that, his infiltration into the Akatsuki was a significant event. Itachi had to operate within this dangerous organization while still having his own motives related to Sasuke and the village. Also, his interactions with Sasuke, like when he revealed his Sharingan to Sasuke during their first encounter after the massacre, were crucial in shaping Sasuke's path and hatred towards him, which was all part of Itachi's grand plan for Sasuke's development.

One of the main events was when Itachi was recruited by the village elders to stop the Uchiha clan's coup. This led to him having to murder his own family and friends in the clan. After that, his life in the Akatsuki was also a big part of his back story. He had to interact with various dangerous criminals in the organization while still having his own goals related to Sasuke and the village. And of course, his interactions with Sasuke over the years, especially the final battle where he revealed some of his true intentions to Sasuke, are crucial events in his back story.

Itachi Uchiha was a complex and tragic character. He was a prodigy in the Uchiha clan. He killed his entire clan except for his younger brother Sasuke, which was a shocking act. But in fact, he did this under orders from the Hidden Leaf Village elders to prevent a coup by the Uchiha clan that would have led to civil war. He lived as a double agent, making himself seem like a villain in Sasuke's eyes so that Sasuke would grow strong enough to kill him and be hailed as a hero, thus protecting the village and Sasuke at the same time.

The key event is the Uchiha clan massacre. Itachi killed most of his clan members to protect the village from a possible coup. Another important event is his joining Akatsuki. And finally, his battle with Sasuke where he revealed the truth to him.

First, there was the unrest within the Uchiha clan which led to their plan for a coup against Konoha. Itachi, being a shinobi loyal to the village, was given the task of stopping it. So he carried out the massacre of his own clan. After that, he joined the Akatsuki, a criminal organization. But he was actually a double agent for Konoha. He spied on the Akatsuki's activities. And finally, the crucial event was his face - off with Sasuke. During this encounter, he revealed the truth about his actions to Sasuke.

One key event was the growing discontent within the Uchiha clan that led to their plan for a coup. Then, of course, the tragic massacre by Itachi which changed Sasuke's life forever. After that, Sasuke's life in the Leaf Village where he was constantly compared to Naruto and felt pressured to be better. His decision to leave the village to train with Orochimaru in order to gain enough strength to take on Itachi was also a crucial part of his back story.

The key event was the Uchiha clan massacre by Itachi. Then Sasuke's determination to kill Itachi in revenge. Their final battle was also crucial. And finally, the revelation of Itachi's true motives.

Since I don't have specific information about the S21 submarine, I can't list the key events directly. It could be things like its maiden voyage, if it's a new submarine. Or any major upgrades it has undergone.