Super Mobile Knight

In the year 0001 of the cosmic calendar, mankind established the first colonial satellite in the universe. In the following ten years, mankind frantically expanded its territory. The number of colonial satellites increased to hundreds. Even large-scale cities were built under the surface of the moon. In the year 0017 of the cosmic calendar, a meteorite hit the moon without warning, causing hundreds of thousands of casualties. The Earth Alliance promptly dispatched troops to rescue, but no one survived. A few months later, a large number of deaths occurred on the colonial satellite, causing great social panic. In order to solve this crisis, the Earth Alliance organized a secret force called "Mobile Knights". (Note: This book is written in the first person. Readers who don't like to read the first person can just ignore it. If any readers ask, why not use the third person? Because I can't write well...)