MTL - Tempest of the Battlefield - ~ 615 intelligent extension

Gripes have their origins and debts have their creditors. We haven’t crossed each other in days past or present, nor formed any grudges. I am but duty-bound to carry this out, so apologies in advance!

In his past life, Yang Chen was a gentle person who was oppressed for his whole life.

Now that he’s reborn, he chose to become an executioner and severs ties and grudges with his executioner’s blade, killing all that climb onto the Immortal Executioner’s Platform!

Heads will roll! Humans’ in the human realm, demons’ in the demon realm, devils’ in the devil realm and immortals’ in the immortal realm!

- Description from novelupdates

A soul named Wu Ling Feng transferred into a male magician character in DNF, that very moment Devil King’s journey officially began…

Enemies magic needs to be chanted, his doesn’t require such, it’s instantaneous magic. His second skill actually allows him to summon permanent dolls, whining Loli dolls, royal sister dolls, whatever he wants…

Loli girl : Onii-chan, don’t do that, it will be painful, ar…

- Description from Novelupdates

Michael Alastair never mattered. In a world where strength was everything, he was nothing—just another powerless kid, easy to break and easier to forget. When his tormentors finally took things too far, his story should have ended in that alley, bleeding and alone.But fate had other plans.In the void between life and death, a voice spoke. Cold. Sharp. Amused. [NEW TALENT UNLOCKED: WRITER’S LEGACY]. A system unlike any other—sarcastic, relentless, and strangely invested—offered Michael a power beyond reason and a purpose he never imagined. Now, armed with an SSS-rank ability and a mission to rise, he’s back. And this time, he won’t just survive—he’ll rewrite the rules.

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?