Kanki might be eating a L or even death/exit but Ousen ain't having same here. He already been blocked in Atsuyou but here after there's only him smacking Zhao from now on.
Correct me if I'm wrong since it's been some time I've looked into history spoilers. From my knowledge Kanki, after his defeat, escapes to another state and isn't heard of since. There were rumours of his death etc but nothing confirmed. As for SBS and Riboku. They hunker down in the capital, Riboku gets executed and SBS's fate is left ambiguous as well. If that's true then i hope Hara uses his freedom as the author to incorporate Kanki in future arcs and SBS as well. SBS never had loyalty for Zhao to begin with.
it seems we will have more intersting things before we reach that point
next year 232 (qin's general gonna attack hango but rbk manged to defend and qin retreat ) the qin general not named in history but it's most likely is ousen .
also at same time wei and han attack zhao from south but rbk manged to defend .
then qin didn't attack zhao for the next 2 years lol.