Their is one little hint/point in this chapter who at least cut of Kyoshiro/Ashura/Kawamatsu/Inuarashi and Neko from the list of the traitors.
We see Orochi in this chapter and he was totally freaking out and scared, he just want to see the corpse of the retainers, he didn´t get any information. Which means he didn´t really if Kinemon and co really get put 20years in the future, he didn´t get any information and this is the point her. If one of the 5retainer would be the traitor, they would tell Orochi about the 20year timejump, he wouldn´t be at least such scared and in panic about the retainer, the point is that Orochi didn´t really have any information/plan which let cut of Ashura and co from the list.
Which means he most like take his news after the 20years by one of these retainers: Kinemon/Raizo/Okiku and Kanjuro. And their is a reason why I believe that Kanjuro send Orochi the news after he pass the 20 years;
In my opinion these two birds are from Kanjuro df power, he send them to Orochi who finally get his information after waiting 20years without knowing anything. Also in this chapter I find Kanjuro reaction little suspect, did he feel something for Toki? Seeing how he come back while little crying as the only one was kinda suspect, at most that he cry after seeing Toki. Did he love Toki but couldn´t take the fact that Oden had her as waifu so he plan to betray Oden and take Toki to him?