Academy's Genius Swordsman - Chapter 242

After a sudden and inexplicable transmigration, Maximus finds himself in a fantasy world where extraordinary power exists. But he is not without his advantages; he possesses a system that grants him the ability to become stronger as he takes on wives and birthed children.Determined to conquer this new world, Maximus uses his cheat to gather wives and birth children, building up his power and influence. As he gains more allies and resources, he sets his sights on the ultimate prize: ruling the world and surpassing even gods.However, the road to conquest is not an easy one. He must contend with powerful factions, rival conquerors, and unexpected challenges as he builds his ideal empire. But with his cunning mind, he is determined to succeed and become the greatest conqueror the world has ever seen.

Jacob Steve, an Old Man, died at 116 after living a whole life.

But Jacob always had a dark side, which he always suppressed and hid from others.
However, in the later years of his life, when death was inevitable, he understood there wasn't any point in having wealth, knowledge, or desires if you couldn't have a life to enjoy them.

He became obsessed with fabled immortality and devoted his reaming life to extending his fleeting lifespan, but just like any other failed.

However, he mysteriously got another chance at life and found a way that led to fabled immortality.
But he was also forewarned that the way led to it was filled with blood and darkness!

In the end, Jacob chose it anyway with no way of going back, and it was also the start of his suffering and his icky, brutal journey toward the 'Immortality' he wanted so badly!

Transmigrating to an anime mashup world, Yoshida Tenya thought that a relaxed and pleasant life awaited him! But then he met them...Takanashi Rikka: My evil king's true eye is the strongest!Yotsuya Miko: Yoshida-san, can you see them too?Yukinoshita Yukino: I like cats, but that doesn't mean I want to become a cat!Kato Megumi: Can Tenya-kun notice me?Alisa: милый (cute)Kuchiki Rukia: Tenya, you are very suitable to be a substitute shinigami!Tenya: I just want to get a treasure chest! Is that too much to ask for?[Ding!][Extracting SSS-Rank treasure chest: Conqueror's Haki][Extracting SSS-Rank treasure chest: Zanpakuto: Zangetsu][Extracting S-Rank treasure chest: Mangekyo Sharingan][Extracting S-Rank treasure chest: Ice-Make]

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?