Sannan has been using materials left behind by Kodo to continue to try to improve the medicine in secret. He drinks the medicine and transforms into something which is no longer human. After seeing the wound Sannan infected on Chizuru heal in an instant, Hijikata asks her if she's a rasetsu, but...
Later, the commotion over Sannan adds to the decision to move the Shinsengumi headquarters to Nishi Hongwanji. Chizuru continues to search for her father, but she is unable to find any clues to his whereabouts. Then one day, Chizuru happens to overhear Okita's secret.
Conducting research into finding a way 
to suppress those side effects, together,
إنّ إجراء بحث لإيجاد طريقة لقمع
تلك الآثار الجانبيّة معاً
Unser geheimer Befehl vom Shogunat besagt,
dass wir einen Weg finden sollen,
El shogunato nos ha encomendado
investigar en secreto
El shogunato nos ha encomendado
investigar en secreto
Le but est de développer
un antidote pour les contrôler,
Dobbiamo condurre delle ricerche per trovare il modo 
di eliminare gli effetti collaterali, assieme.
Tenho que fazer pesquisas para encontrar uma
maneira de coibir esses efeitos colaterais...
Сёгунат тайно приказал
вместе отыскать способ