What's up with the scans now being released as batch of 2 to 4 chapters instead of a chapter at a time? Out of the loop here.
Tou will probably end up marrying Princess Nei after Han's fall and her attraction to her much older mentor, Kan-Pishi, means that Tou is well within her type. This is foreshadowed when Tou was saying farewell to the princess and asking her if Kan-Pishi means more to her during his visit to Han with Shin and Rokuomi 2 years ago in the story.
If Rakua-Kan has actually been keeping his eye on and studying all the Qin's great generals over the past decade, he would know about Shin's thick plot armor and that Tou has top-tier talent in addition to long battlefield experience that gives him an edge. So much for Kan-Pishi running a spy network.
Maybe Rakua-Kan could pull some unconventional stunt to give Tou a challenge but I highly doubt it would even come to that.