Time travel and fan Long Fei, an otaku who travels to another world, was an otaku who was a Gundam fan and a military science fiction fan in his original world. He died unexpectedly and was reincarnated in another world. The Gundam works and techniques in various military novels he had read during his lifetime could actually be brought to another world. How would he use the Gundam created by Long Fei? What kind of turmoil can it cause in this other world?