Omnipotent Husband System - Chapter 101: Restless.

I was reincarnated into another world, and I’ve brought the Horadric Cube from Diablo II with me.
Being a knight is cool and all, but being a wizard is pretty neat as well.
So, which one will it be?

- Description from Novelupdates

A world filled with heroes with superpowers. A world attacked by calamity fiends. A modern world filled with wonders and dangers.

How massive must the wealth of a family that has been passed down for five thousand years be? Sometimes, you’ll never know how rich your family really is until you push your parents a bit! Only after inheriting his family’s five-thousand-year fortune did Zhang Menglong realize that the joy of the wealthy is so simple. Bank president, “Mr. Zhang, please, I beg you to deposit your money with our bank, and you can set the interest rate!” Huaxia’s top wealthy second generation, “Does the whole world belong to your family or what?” World’s richest person, “I feel like I am just a poor man!” European Royal Family, “Mr. Zhang, are you lacking a girlfriend? If you are, would you mind finding one? If not, would you mind one more? What do you think about our country’s princess?” Latter, Zhang Menglong found out that the college his parents left him was the most impressive thing. Actually, being a dean turned out to be even more joyful than being the world’s richest person!

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?