Shadow's Oath - Chapter 1

Arthur, a young man in his twenties, suddenly finds himself inside the world of the novel “The Rise of the Sovereign Sword,” a famous story he had been reading in his previous life. He doesn’t understand how he ended up in this world, but he soon discovers that he has been installed as the ruler of a poor and small barony due to a serious misunderstanding—everyone believed he was the illegitimate son of the Duke, a man notorious for his terrible reputation and corrupt deeds.Afraid of having his true identity as an impostor exposed, Arthur finds himself in a difficult predicament.As he tries to find a solution to his dilemma, he faces daily problems stemming from this world’s extreme backwardness in terms of economy, technology, and governance. However, instead of surrendering, he decides to use the knowledge from the world he came from to change this regressive situation.Arthur attempts to spread civilization and progress in his society, fighting against outdated traditions and establishing new concepts that will improve and advance people’s lives.

In a world of swords and magic, where Dragon Knights and Grand Archmages wield powers capable of destroying the heavens and shaking the seas, the legends of their prowess echo throughout the ages.In this world, Sylvus, having crossed over from another realm, opens the Eastern Elixir Shop with a unique system that grants him mastery over ancient elixirs.Within this humble shop, elixirs from the eternal archives of Xianxia are available—each more powerful and mysterious than the last.A Nine-Star Saint Archmage toils away in the shop, working to repay his debt.A Nine-Star Platinum Knight pleads with the shopkeeper, desperately hoping to buy just one elixir.Even God Mages and Divine Knights engage in fierce battles just to secure the coveted Nine-Transformation Golden Elixir before others.

【White Eyes】+【Electromagnetic Force】+【Bow and Arrow】+【Science】

People are in Hyuga, start the awakening of electromagnetic force!

What kind of changes will occur when the sun is paired with the electromagnetic force?

Hyuga Satoru said, what is soft boxing?

Dogs don’t learn!

Aren’t electromagnetic guns fragrant?

What?

Hyuga doesn’t have a ranged attack?

My bow and arrow are paired with electromagnetic force, within the range of white eyes, where to shoot, the magnetic storm is here!

What?

Can’t Hyuga drive Gundam?

Hyuga Satoru snapped his fingers.

Electromagnetic force, move!

Completely in the middle of Susano’s body, Madara Uchiha looked up at the metal Gundam hundreds of meters high in front of him, and fell into contemplation.

An unknown Hyuga’s slander: Everyone is Hyuga, why are you so unscientific…

(Bow and arrows are upgraded to sniper rifles in the mid-term, and space-based electromagnetic guns are upgraded in the later stage)

- Description from novelbuddy

After finishing the DxD light novel, a Warhammer 40K fan loses his life and finds himself, without any clear explanation, in the body of an angel banished from paradise by his Heavenly Father.[Ding!!!][Congratulations, Lord Sanguinius.][You have been selected to become a member of the dimensional discussion group.]“'m just a member... not the administrator?”Author's Note:A story born from a whim, but one that can flourish with your support.## Warning:I do not own any of the works represented here, such as DxD, Warhammer 40k, or others (the cover doesn't belong to me either).This is a harem (small, but still a harem).Author’s note:!!!! Another important piece of information!!!Please, do not read this story if you are unable to distinguish between an Ecchi light novel and religious events or statements related to various sacred scriptures.If that’s not the case for you and you post crap in the comments, I’ll just delete it (this is a fanfic, not a place for religious debates or discussions related to the divine word).Honestly, I didn’t want to include this in the synopsis (it makes me seem like I hate faith when I actually have religious friends), but a VERY intelligent reader managed to persuade me to explain to people the difference between an Ecchi light novel and the precious writings of human history