MTL - After the Eldest Sister-in-law Died Young, Dai Wen Remarried. - Chapter 544 Ex-husband?

My name is Joelson, and I traversed across the world. I arrived at a continent of sword and magic and became a noble sorcerer.

The doomsday fell upon the earth when a dragon coffin sealed under a snow mountain for ages shifted, and the civilization of gods and devils began. The whole universe turned into a fantastic new world where everyone could rise to the top through cultivation. A lucky young boy seized the opportunity, and started his journey to be an overlord in cultivation.

- Description from Novelupdates

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?

When Roland crossed Middle-earth with the Lord of the Rings system, Gandalf was organizing an expedition, the king under the mountain still did not return to his throne, the Hobbit’s adventure had not yet begun, and the world was still shrouded in shadows…

- Description from novelbuddy