Jaken recalls that fateful day fourteen years ago, when Zero placed a curse on Rin that would make her slowly rot away to an excruciating death. The three girls search for Bokusen-Oh, who may have a lead on the whereabouts of Towa's new weapon.

Rion used to travel the world with her father Kirinmaru, but one day, her soul was sealed deep within Mount Musubi. Longing for freedom and peace, Rion asks Setsuna to sever the thread of fate that connects her to her father.