The following article contains spoilers for Shgun Episode ... A frustrated Yabushige eventually musters enough courage and audacity to ask the boss if he wanted to be Shogun all along.
While Yabushige has long been operating in his own best interests, Blackthorn only begins to look out for No. 1 in Episode 8. When he offers himself to Yabushige, he's abandoning Toranaga.
Yes, Toda Mariko dies in Shōgun Season 1’s penultimate episode, “Crimson Sky.” She meets her end when a band of shinobi warriors attack her, John Blackthorne, Kashigi Yabushige, and Yoshii ...