Sasuke was initially stunned by Kakashi's words, then slowly deactivated his Sharingan. Although he did not know what Kakashi was talking about, Sasuke felt it would be better to cooperate with him a little. After all, Kakashi was his teacher now!
"Don't rely too heavily on the Sharingan while neglecting other aspects of your training, or you'll end up like Uchiha Itachi and fall into darkness!"
Seeing that Sasuke was already somewhat intoxicated by the power of the Sharingan, Kakashi kindly offered a reminder. From his current perspective, Kakashi could basically confirm that awakening the Sharingan definitely required intense emotional upheaval.
If that was truly the case, then it made sense that Obito had awakened the Mangekyō Sharingan after witnessing Rin's death.
"Do you know anything else about the Mangekyō?" After giving it some thought, Kakashi looked at Sasuke, who had fallen into contemplation before him, and continued asking.
"After Uchiha Shisui died, the Uchiha clan believed Uchiha Itachi had done it. That was the first day I saw Uchiha Itachi's Mangekyō Sharingan!"
Faced with Kakashi, who was still digging for answers, Sasuke pondered briefly before slowly revealing this information.
"I see!"
After hearing that, Kakashi fell silent. His doubts had been resolved! Though he had not interacted much with Uchiha Shisui during his time in the Anbu, Kakashi knew about the relationship between Shisui and Uchiha Itachi. Those two had been like brothers!
After Uchiha Shisui's death, Uchiha Itachi awakened the Mangekyō Sharingan. By the same logic, Rin's death had caused Obito to awaken the Mangekyō Sharingan.
"How much do you know about the Mangekyō's powers?"
Once he understood this, Kakashi suddenly thought of the Nine-Tails incident. Back then, the Nine-Tails had also been controlled by the Sharingan. Could the one who had killed his teacher and teacher's wife