Eighteen- Naruto

Burnout

They called him a genius. Master of a Thousand Techniques, Sharingan Kakashi. Those names didn't mean anything- they weren't even his. The Sharingan wasn't his, the techniques weren't his. They called him a genius anyway, saying he was unmatched in skill and talent.

Obito had called him a heartless jackass. Obito had given up his eye and his life. Kakashi hadn't even given up his mask.

Chuunin at six. Jounin before the age of fifteen. Genius son of the genius White Fang of Konoha. (The disgraced White Fang of Konoha; he still had the weapon his father had killed himself with.)

They half expected him to become hokage when he was younger, but it became clear that he wouldn't. He was lazy and irresponsible. (He spent too much time standing over Obito's grave.) He put no effort into anything at all. (Unless you counted his missions, which were always successful and almost always ended in someone's death.)

He'd been a genius at six, the youngest chuunin to graduate. He'd been a genius at thirteen, the only non-Uchiha sharingan user. He'd been a genius at eighteen, the Copy Nin, master of a thousand jutsu.

At twenty six, he was just a lazy bum whose students couldn't work together. (And by "work together," we obviously mean "keep from killing each other and the members of the village.")

They'd called him a genius, but he'd been too late to save Sasuke.

(Obito would have called him a burnout.)

He still hid his face.

(Obito would have been right.)