I Was Betrayed But It's Okay haha - Chapter 8

He wants indoor plumbing. They think he’s conquering the world.Arthur was a genius engineer on Earth, capable of optimizing global logistics and automating entire factories. But he lacked one thing: common sense. Now, reincarnated as Arthur von Pendelton, the six-year-old son of a powerful Duke in a medieval fantasy world, he faces his greatest challenge yet: Drafts.Armed with the T.E.C.H. Interface (Trans-Epochal Construction Heuristic), Arthur can analyze magic like code and build modern technology from scratch. His goals are simple: Double-glazed windows, hot showers, and a toaster that doesn't burn the bread.But there is a problem. The people of this world don't understand engineering.He builds a high-pressure boiler for a bath; his father thinks it’s a “Dragon-Breath Siege Weapon.”He creates a hydroponic garden; the local church declares him the God of Harvest.He ignores a Princess's flirting to analyze the thread count of her dress; she thinks he is playing “hard to get.”Follow Arthur as he accidentally industrializes a kingdom, terrifies his enemies with home appliances, and remains completely oblivious to the fact that he is becoming the most powerful man in history.All he wanted was a warm bath.

[Warning! Contains sex scenes, lemons and perverted MC. Read at your own risk.]Rain, a typical young master, led a fine life, enjoying power and status.But once confronted by the hero, Rain suffered a crushing defeat. Unable to accept this reality, he continued to confront him, not knowing that he was doomed to defeat from the start.Eventually, when Rain had lost everything he held dear and was in the depths of despair, the fog in his head cleared and he realized.“What the fuck am I doing?”“Why am I not using my brain and d*ck to defeat the hero?”After that, Rain found his own way to crush the hero...----What about the story?{Milfs, A lot of Netori and Stealing, Large harem, Oyakodon, Mature Women, Virgins, Yandere, Twins, Waifu of different races, Beast girls, Dragons, Elves, Succubbs, Demons, Goddesses, and lots of other cultural stuff}Of course, No Ntr, No Yuri.And what about the Main Character?{Highly Possessive, Shameless, Genius, Knows what he Wants and Gets it}

Nine harmonic zither chords shook the universe, who dared to not acknowledge the lord?

A man who returned from Hell, revels in the city life, marries the most beautiful woman, and steps on his wildest enemies' stories. I'm the full-time bodyguard of the goddess; stay away from me, otherwise, the young CEO wife will get jealous again!Oops, why did I say “young”?