The day Itachi disappeared with Sasuke, the originally sunny sky suddenly started to rain with thunder and lightning, and the pouring rain splashed on his body, making him wet.
At the last moment when Kakashi died, he was extremely relieved. He thought that your leader's "gradual loss" failed. I can leave the memory that belongs to Itachi. Even if I die, it doesn't matter.
The process of waiting for death will not be so painful if you have the memory of loving each other.
Kakashi wanted to leave the last part of his life to the person he loved most, but he never let Itachi know. He loved Itachi in a way that Itachi might never accept, but he could only love him so much.
Let me die horribly, and it will be difficult to reunite in the future.