One Piece: I'm Destined to Be the Son-in-Law King! - Chapter 54: You Have Chosen Death

There are three realms in the multi verse; The Cosmic, the Mortal and the Nether realm.

Hal grew up in the mortal realm with no idea whatsoever of who his parents were.

His love for relics, adventure and the occasional danger would aid him in finding a genie's lamp.

Rubbing a genie's lamp should grant three wishes, but Hal is struck by lightening instead and eventually arrives in the Cosmic realm with a large book in his mind space titled; The Primordial Cosmic Grimiore, that apparently holds all knowledge for a perpetual reign.

And so Hal's journey begins in a little city called Salmon city, in the body of a 17 year old boy also named Hal but was sold into slavery by his own father.

Hal finds out who his mother (prior to reincarnation) whose bloodline now flows unmixed in his new body is....

Join Hal as he battles mortals, Dragons, phoenixes, Gods and many more together with his harem of Beauties for the complete subjugation of the three realms.

The most famous deed of this princess was her words to her younger brother Liu Ziye.

When he became emperor, she told him, “Although your highness and I are of different sexes, we are the children of the same father. Why can you sleep with so many different women, while I must be only with my husband? This is so unfair!”

And after the Emperor Liu Ziye heard his elder sister’s words, he ridiculously thought it made sense. So he immediately corrected his “wrong ways” and painstakingly selected thirty handsome youths for her to enjoy.

Chu Yu awoke in the princess’s body and realized that she had obtained a male harem of three thousand; should she take just one to drink, or keep all of them?

- Description from Novelupdates

Carrying the strongest reading system through the world of the Tang Dynasty and becoming a scholar who has just been awarded the jinshi, Chen Qi found that the Tang Dynasty was a bit strange.

The champion is Chen Guangrui, who has just been hit with a hydrangea by the daughter of the left prime minister Yin Kaishan, and is about to counterattack and marry Bai Fumei.

A physicist named Yuan Shoucheng came to the gate of the city. He had three hexagrams a day, and he liked golden carp the most.

In addition, he also heard that Wei Zheng, the Prime Minister of the Right, can kill ghosts and gods in a dream…

Chen Qi was completely panicked.

As soon as you talk about the strategy to destroy the Buddha, you tell me this is Journey to the West?

King Tang was displeased, suppressed by hundreds of officials, and distributed to the Hanlin Academy?

It’s okay, hide in the small building and become a united, who cares about his winter and summer and spring and autumn!

Sixty years later, when Li Tang took a curtain call, the empress ascended the throne, and asked me to come out of the mountains and settle the world.

Since then, the heaven will return to the heaven, the world will return to the world, and the monks in the west can only go to the west.

- Description from novelbuddy

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?