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.
The fact that Sannan-san 
drank the Water of Life
حقيقة أنّ سانّان-سان شرب ماء الحياة
Dass du das Wasser
des Lebens getrunken hast, …
Que Sannan bebió el Agua de Vida
Que Sannan bebió el Agua de Vida
Seuls ceux
en qui nous avons confiance
Dirò solo a coloro di cui mi fido ciecamente 
che Sannan-san ha bevuto l'Acqua della Vita.
O fato de que você bebeu a Água da Vida
О том, что Саннан
выпил живую воду,