After the 4th great Shinobi war, kakashi who became the hokage released Obito from prison after a while and gave him the task of protecting the Hokage. He wanted to make it clear to the others that Obito was no longer a danger to the people and Konoha. In addition, Kakashi's hidden reason for this was so that Obito would be free and experience real life after years of isolation and suffering. Also he wanted to keep Obito close, well because that man was his best friend once, the person who made him stop being a jerk who only cared about his mission. Obito made kakashi a human being who cares about others, not just his missions. ... Now kakashi was sitting in hokage office and reading the reports. He was tired but he had to finish reading the reports and doing his duty as the hokage of konoha. In that moment Obito entered the office without knocking and closed the door. "Hey hokage-Sama how you doing? Killing yourself with duties?" There was a tone of mockery in his voice but behind that mocking tone, concern laied.