Lethal Stunner: Kicking Off with Five Beast Husbands - Chapter 13: Brother Murderous Intent, Sister Grading

Freya, head of the Tokyo yakuza, is suddenly betrayed and murdered by one of her subordinates.

“Well, I thought I would end up in hell and now a Goddess is interested in me to fight against humans from another world reincarnated as a Wolf Demon? Nani ?????”

[Empress System Initialization Successful 100%]

Follow Freya the ruthless Empress of Ice as she draws her story in an enigmatic new world of magic and fantastic creatures. She'll discover that life is no easier than on Earth, if not harder and crueler. In this world where humans act as tyrants over all other races, hunted, denigrated, killed, tortured, even if the law of the strongest humans reigns, she'll rise to the top.

“Humans ? Exterminate them to the last one ! My family, companions and Empire ? I will give everything to protect them !”

From a cruel monster to a loving woman, watch Freya found her Empire to change the whole world and tint it with her color. Accompanied by her new family, companions and subordinates be the first to witness the ruthless Empress Freya writing her legend.

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

One day he suddenly found himself in hell.
All he had was the desire to live and a predation ability.
From the first to the ninth thousand circles of hell, he absorbed dozens, hundreds of thousands of demons.
Even the seven great dukes of hell bowed down before him.

– Why would you wish to go back? Doesn’t his highness have everything that’s in Hell?
– What do I have?

Nothing to eat, nothing to enjoy!
The only things in Hell are the barren lands and terrible demons!

“I’m going back.”

After ten thousand years he returns to Earth.

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?