Mikoto and Takeru reach the quiet village of Ayagami together with Yamato, marking the final stage of their preparation as demon exorcists. Inside Yamato lies a demon once sealed by the sisters' mother, Hatsune, and only the deep spirit power of the Haramiko can complete the binding. As the three begin their work, the sisters accept that their commitment demands every effort and every offering they can give. The first steps of their trial reveal both the weight of their duty and the resolve they carry forward.