Knight Hunters Eternity File - New Blood -Vol. 1-

The protect the light, a new generation must be born into the darkness. Koua Academy is a prestigious school for the future leaders of Japan, but it harbors a dark secret. During a rash of mysterious "suicides", Sena Izumi transfers to the school. As an assassin for Weiss, Sena and fellow classmate Kyou Aguri, answer only to their enigmatic teacher Aya. They are also joined by veteran assassins, Ken, Yoji and Omi to cleanse Koua of this evil.