Ebiten: Kouritsu Ebisugawa Koukou Tenmonbu OVA

​While the main Ebiten series is already heavily reliant on chaotic anime parodies, the OVA takes it to a whole new level by completely shattering the fourth wall. The girls of the "Asstronomical" Club realize that they are actually just characters in an anime, kicking off a bizarre, meta-conspiracy plot to uncover the truth of their own existence