The Drugs Don't Work

Kakashi is hospitalized after overdosing the night of Obito's birthday. They find out that he had been secretly using drugs as a way to fight off depression. That night he thinks about his life and realizes the effects of his addiction were catching up to him, the regular amounts weren't working and his internal demons were winning.

No one expected him to turn down that path, but it had been the only thing that took the pain away. For just a short while he could forget all his mistakes, be blind to the blood staining his hands, but he'd eventually have to come back down and face the mess he was becoming.