Murder Mystery of the Dead EP4 - Self-Doubt

The barricade is destroyed and the zombies are allowed to invade, but the girls work together and manage to fight them off, but they notice that Rumina is missing. While everyone is looking for Rumina, Mikoto is attacked by a mysterious headache. Then, Mikoto begins to be confused by her own memories and secrets that begin to come back to life. Meanwhile, the girls find Rumina crouching and trembling in the theater sleeves. What secret does she have...