This episode is quite tense and sad. We learn that Suiseiseki has a younger sister named Souseiseki, and that they were together until Suiseiseki decided to leave because their master lost his mind, mistaking Souseiseki for his deceased son. It's truly heartbreaking to see the old man suffer so much when he believes his son is lost. Suigintou solidifies her status not only as a cruel villain who enjoys making dolls suffer, but also people. This episode is truly painful because Souseiseki can't make a choice without ultimately hurting her loved ones.