Dance In The Vampire Bund (dub) Episode 7 -

Akira's loyalty to Mina is severely shaken during this time. He learns that vampires have already infiltrated the school and that Mina kidnapped a young boy to blackmail the Japanese government into cooperation. Disgusted by these tactics, Akira sides with the humans and plans a school assembly in the sunlight to expose and banish all vampires. The Church Showdown

Despite their mutual distrust, Mina and Akira must work together to stop Jean and rescue the students. Dance in the Vampire Bund (Dub) Episode 7

In the aftermath, the surviving student council members are given a vaccine to remain human, though they are left deeply traumatized by the event. Akira's loyalty to Mina is severely shaken during this time