Kakashi //

Kakashi was walking through the forest when he encountered a masked man wearing the Akatsuki cloak (Tobi).

Kakashi tries to attack him, but Tobi dodges. Then they start fighting, but the masked man apparently didn't want to hurt Kakashi, since he only dodges Kakashi's attacks.

Kakashi Hatake had always hidden his feelings behind discipline and silence. From a young age, he believed that following rules and missions was the only way, and this rigid attitude ended up pushing people away without him realizing it. With Obito, this happened all the time.

He saw Obito as impulsive, disorganized, and overly emotional, and therefore maintained a cold distance. For Kakashi, showing affection was difficult; recognizing someone's importance was even harder. But even so, he observed Obito more than he let on. He saw his determination, his effort, his courage. And, little by little, even without admitting it, Obito began to mean something to him.

The problem was that Kakashi didn't know how to show his feelings—and when he tried, it was already too late.

In the cave, when Obito was crushed by the rubble, Kakashi completely believed he had died. For him, that moment was final, irreversible. Receiving the Sharingan wasn't just a gift: it was the last proof of trust and friendship that he could never reciprocate while Obito was still alive. Guilt consumed him from within.

Carrying the pain of Obito's supposed death, Kakashi tried to move on… until he lost Rin as well. Being forced to kill Rin in front of the one he thought was dead shattered his soul in two. He believed he had destroyed the last link that bound him to his lost friend.

When Kakashi discovers years later that Obito is alive, all he feels is shock, guilt, and regret. He never imagined that the Obito he "lost" in that cave would survive—much less that he would return so broken.

Kakashi never understood Obito's obsession with him, but he always recognized the pain. And throughout his life he carried the weight of not having seen, while there was still time, how much Obito needed to be noticed.