Heaven detachment is the army under the direct control of the Lord, the king of light. No one knows what they do. Even the four winged Blazing Angels, so the power of this detachment is so great that he can directly command the four winged archangels to do things for them.

However, such a powerful army met with a very depressing thing more than a month ago. Their task was to transport the hundreds of thousands of machine biplane angels they built from the 15th heaven in the rear to the 18th hell. At first, it was a very relaxed and comfortable thing, because along the way, they could fight...