MTL - Princess Medical Doctor - ~ 913 choice, different from the couple

God gave me one more chance and finally came back after four hundred years.

As soon as I realized I returned, I decided that ‘no one should have pride.’

My goal was to destroy the country. So, I grew up with a genius prince who lived in hiding before returning.
He took up the empire for me and I left him for him to achieve his goal.

‘I came to pick you up Charlize Ronan.’ Dylan, who became a perfect tyrant after a few years, found me after searching all over the continent.

‘Why did you flee and run away?’

Because of boredom, Xu Jinyi entered a game. In this game called “Different Worlds”, he needed to play some cannon fodder or villain to live a happy new life.

Xu Jinyi worked hard to finish the game, and finally realized that this game was actually a scam created by Zhao Chengli specifically for him.

- Description from Novelupdates

“Gabriel Bryce, how can you stand being so shameless?” Leonica asked, staring daggers at her atrocious husband and his mistress. “This is the house gifted to my by grandmother, yet you dare bring another woman into it? Aren’t you afraid that grandmother would be disappointed with you actions…?”Leonica’s words remained unfinished as an enraged Gabriel swung his hand through the air, smacking his palm clean on her left cheek.Leonica held her throbbing cheek, eyes wide and teary as she stared at her husband who glared down at her ferociously.“The nerves of you to mention my grandmother. You have no right to do so!” He spat, taking a step forward and jabbing his index finger painfully into her shoulder, making her take several steps back. “Bare this in mind, Leonica Romero, if not for the wishes of my late grandmother, I’d much rather be dead than associate myself with somebody like you.”*~*~* *~*~*Leonica Romero has always had a long time crush on Gabriel Bryce, CEO of Bryce Empire and Norway’s Business tyrant. Fortunately, at the request of his Ill grandmother, her family’s long time friend, Leonica gets the chance to marry her beloved.Feeling elated, she abandoned her position and dream job in the Romero household and becomes a humble housewife for Gabriel. However, Three years later, on the day of Gabriel’s grandmother’s funeral, Leonica is stunned speechless when he demands for a divorce, as his ex girlfriend Angelina Fernandez had suddenly returned, proclaiming her undying love for him.But that wasn’t the only shock Leonica received that day. Hours after Gabriel’s declaration for a divorce, Leonica wakes up in the hospital to a shocking news.She was two months pregnant.And Gabriel knew nothing about this!

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?