Mr. Gatson's Bride Is Back - Chapter 39 - Buying Underwear

One day, I was summoned to this world.

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?

- Description from novelbuddy

Waking up after a sound sleep, Xie Mingzhe reincarnated into the future world. Here a holographic trading card game is popular around the Galaxy, many professional card players and card designers coming to the fore.