From Dusk Till Dawn - S1.E6

Akira is confronted by Meiren, and Akira begins doubting Mina. He finds out about Mina kidnapping the Prime Minister's grandson and confronts her about it and about the fact that vampires have infiltrated the school. She says that the vampire society rests on her shoulders and that she will do whatever necessary to make sure that the Vampire Bund plan is fulfilled. After hearing this, Akira teams up with some of the kids from school to eradicate the vampires inside the school.