From the time Ousen said about using Shin as his prev achievement, that was the moment i think Riboku will think the same.
Riboku though the same as Ousen about Hango. So yeah, this chapter about Riboku was expected.
Here is what i thought, Shibashou is actually Instinctual type.
Ousen thought that Riboku would have a trouble since Shin is Instinctual general. Then we have a strong support argument of Ousen that Riboku went to take Shin. But of course, Zhao would fail to take Shin out.
Thus, 'Qin seems proud' that Riboku cant do anything. But, actually there were a Bigger Tiger waiting on the desert, SBS.
Riboku: "don't belittle me!"
Narrator: "in this Campaign, there will be a big Incident" oda styleShin unleashes 100% Duke Hyou Instinct, the perfect copy of pre-GG.