Hakuho ragequitting sumo because Kisenosato proved to be a better oyakata that him.
And he timed his quitting to upstage Onosato's promotion as a last act of spite against Kisenosato and in the process doomed himself to be an embittered outsider for the rest of his life.
I wonder if he'll ever buy tickets to go watch his former stable's wrestlers compete, will be funny to see him sitting next to Dr. Takasu seething while watching Kisenosato's stable take home another cup.

>ACKuho