Nabari no Ou (2008)

S1E14 End of Night

Miharu and Yoite flee from the academy students, with Yoite nursing an injury. One of the academy's instructors, also seeking the kinjutsu scroll, attacks Aizwa. It’s disclosed that Daya, the powerful kinjutsu that can heal anyone, demands the flesh of young ninjas as part of its recipe. In the midst of this chaos, Shijima, a student from the academy, stabs Yoite, triggering the awakening of the Shinrabansh?.