MTL - God Rank Hero - Chapter 1980 Explosive! Makar exploded

Mira is determined to be a botanist—no matter how dangerous or violent it may become. Mira made two requests upon entering the multiverse: a botany class to further her research and to be dropped off in an isolated forest far from the violent god-rearing system BS going on. She was granted both—but not in the way she expected. The system abandoned her in a hellishly dangerous forest—where she earned a rare class that excelled at killing things.

When choosing the companion system, Congliang did a trick, palace fights, house fights, scumbags, counterattacks, and other systems that seemed to be particularly wasteful of brain cells, and pulled a particularly pure-looking “Scum Girl Congliang System”.

Being good means being a good person, and being a good person is simple.
However, after starting the time-travel mission, Cong Liang discovered that her trapping system has another more appropriate name – “Sura Heart Hunting Field”
In other words, how to make a person who was imprisoned by you, humiliated, beaten, abandoned, abused, ridiculed, betrayed, harmed, exploited… fell in love with you and gave you a sincere kiss?
Wait online! Very urgent!

First wear – lame prince
Second wear – Blind man
The third wear – juvenile offender with severed finger
Fourth wear – ghost face fifth uncle
Fifth wear – one-armed tailor

【important hint! ! ! 】
The heroine is a rough man at heart, the hero and the woman got the wrong script series
Every world I will write seriously, so I may wear it slowly
As always, all logical common sense comes from the author’s brain hole, all for the service of the target, you are easy to go crazy
Declined to examine the textual research list, and to take the author’s anger

- Description from novelbuddy

[Shelter System successfully bound to host!][Option One: City of Light, save the survivors in the apocalypse and become a glorious and benevolent savior.][Option Two: City of Darkness, humans who enter the City of Darkness can only become your slaves. And you, will be the devil ruling over the apocalypse.]Sorry, I am no saint, I choose City of Darkness! From today onwards, I will be a villain!

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?