Chapter 47: The play ends, but Kazunomiya-sama suddenly collapses. After inspection, Ryojun declares that she had been poisoned. Jin, who had been invited to watch the play at the location, convinces Ryojun that he knows the nature of the poison, that is was likely arsenic poisoning. Trusting of Jin’s observation, Ryojun allows him to help save Kazunomiya-sama.