Found in the depths of YouTube, some kindly fan shot a rather excellent butsukari session during the jungyo sumo PR tour last week. It appears to show Yokozuna Hakuho in an extended butsukari session with rising star Onosho.
Onosho has turned in back to back 10-5 records in his first two tournaments in Makuuchi, and it’s clear he is a young man driven to succeed. If you have the patience to watch the whole thing, Hakuho is really working him to exhaustion (the point of butsukari). At the end, its awesome to see Onosho rally and really push with renewed vigor.
Note as Onosho reaches exhaustion and wants to give up, Hakuho first taunts him, then gets the crowd to cheer him on.
For those not used to sumo training, this interaction may seem odd or even somewhat like hazing, which it is not. I also note that Hakuho really seeks out the hard-charging young rikishi who are working to make the best of their sumo career, and works them hard.