MTL - The Only Favourite Ugly Husband - ~ 125. The school opened

Xuanyuan was reborn into a strange new world where training to be a Xian was a cornerstone. There was however something ancient dwelling inside his body. He could now devour all of creation…

This is the journey of an ordinary boy and his transformation into the supreme being that reigns over all existence! Everywhere he went, he could not help but tie his fate with numerous women. It did not matter whether they were a goddess or a devil…

- Description from Novelupdates

An unearthly beauty with black hair, snow-white skin, and bright red lips... Yue Ran has been told that she was born exceptionally beautiful for as long as she can remember. She meets all people's expectations for beauty, but she is a girl who loves no one but herself.Only such a person can be invincible in many small worlds.Ah, but there is one thing she lacks: free will.

【Global Game + Infinite Flow + Farming Infrastructure + Healing System + Fluffy + DND-like】Born through reincarnation and abandoned in the forest at birth, I barely survived into adulthood when the global game descended, and everything had to start anew as the scientific world suddenly took a turn.Killing beginner monsters, logging into the game, each person received a Player Manual and took on extraordinary Professions like Barbarian, Warrior, Wanderer, Martial Monk, Priest, Druid, Forest Patrol, Mage, Magician, and Bard—eleven core Professions to choose from.This is a mythical world teeming with numerous Races; humans are no longer the sole intelligent Race. Elves, mermaids, Half-Breeds, Mushroom Men, goblins, and Jackal Wolfmen each have their own way of survival—some are friends, others enemies.New players, along with the world, embarked on their evolutionary journeys.Mu Ying, holding the Lord Token, took on the role of an adept farm grower and jack-of-all-trades Druid, eventually becoming the first Lord and the first player in the deep blue.…………This text contains slow-paced infinite flow elements, currently featuring Trial Worlds: Square World, Witch World, World of Gods.(There is a male lead with low presence, very limited screen time, in a relaxed, healing system centered around a strong female lead.)

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?