Monster Strike The Animation

The lonely dragon Oragon is called upon to help save the Strike World from annihilation and hear tales of the legendary monsters that will help him, including the fallen angel Lucifer, the Knight of Knights Arthur, the mage princess Solomon, and more. Features a storyline unrelated to the previous Monster Strike the Animation seasons. Various stories featuring monster characters from the Monster Strike mobile game are presented in an omnibus format.
(Source: Official YouTube channel, edited)

Includes Episode 0.