Raising the Northern Grand Duchy as a Max-Level All-Master - Chapter 66.1

I was summoned to a ruined world and received the ability to create various things. Since I don’t have a house to live in I will make a house. Since people are gathering at my house I will make a town. Since the town is being attacked by monsters I will make the strongest weapon and repel them. Using my infinitely charging magic power I will remake this world as I please.

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet."
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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[Powerfulcouple]The entire Yong City knew that Eldest Miss Su of the Su Family had a malicious nature and a scandalous reputation, acting outlandishly day after day, much to her family's disgust.Worthless dad: “I certainly do not have such a daughter; my only daughter is Xinyan.”Old Madam: “Shameless thing, you've completely thrown the Su Family's face away.”White lotus younger sister: “I'm sorry, Sister, we were never people from the same world.”Scumbags: “Trash that can't show their face in public, lowly people don't deserve to enter our circle.”However...Before Eldest Miss Su had expressed her opinion, various bosses couldn't hold back any longer.A certain Film Emperor: “Picking on my boss—tired of living, are we?”A certain Association: “Mr. President, please instruct, bankruptcy or banishment?”A certain Group: “What's the Su Family? Not even worthy to carry the BOSS's shoes.”Bigwigs from various fields: “Hello, sister-in-law!”Su Ran: “?”While the outside world was marveling at the continuously revealed identities of Eldest Miss Su, the man who was legendary for his mystery and restrained self-discipline swept her into his embrace.“Little ancestor, is there any identity of yours that I don't know about?” the man's voice was seductive, lazy, and casual.Sister Ran curled her red lips slightly, smiling brightly: “Your wife.”

Reincarnated and traveling to another world, Eiji Seiya initially thought the world was normal. That was what he thought before he met the heroine and protagonist of the franchise he had watched in his previous life.Not only that, after he awakened the Inner Voice System to grow strong by complaining about plot, heroine and protagonist in his heart to get many rewards.He is determined to increase his power so that he can save his home world, the world where he was reincarnated that was hit by the disaster “Honkai” and save beautiful girls like Kiana, Mai, Bronya, Rita and others who had tragic endings in the original works!“I will save them all!”However... Everything went smoothly... Eiji earned rewards every time he changed the plot in another franchise.It's just that... What's wrong with these heroines?Lala Satalin Deviluke who was supposed to be engaged to the protagonist instead became his fiancée.Sona Sitri suddenly called him to the student council office and said she wanted to make a deal with him.Rias Gremory who was supposed to ask the protagonist for help to solve her political marriage problem with Riser Phenex inexplicably came to him.The girls were disgusted at the protagonists of their respective franchises.Something was wrong here!Not only that, heroines like Kotegawa Yui, Sairenji Haruna, Akeno Himejima, Kuroka, Serafall Leviathan, Grayfia Lucifuge, Sakurajima Mai, Ai Hoshino, Kasumigaoka Utaha and others...They like him!All the super beautiful and sexy women that many men in the world covet surround him and leave their respective protagonists.Grayfia even betrayed her husband.Eiji who saw all this was dumbfounded.At first he was confused as to why these heroines were surrounding him, but gradually he realized and knew that it was all happening because ...His inner voice!The plot that has been changed by the MC:To Love Ru: 83%Highschool DxD: 82%Shinmai Maou no Testament: 92%Oregairu: 89%Saekano: 84%Oshi no Ko: 100%Rascal Does Not Dream Of Bunny Girl Senpai: 100%Mieruko-chan: 89%Trinity Seven: 38%This is the plot change process of the latest chapter and will change as the story progresses.By the way, the grammar at the beginning is bad and will improve as the chapter progresses. However, my writing style will not change much because this is an inner voice novel, which means that there will be many reactions from each character.Oh and in chapter hundreds there will be a group chat to prevent the loss of interaction between the heroines. It's a special chat group for the heroines in the MC's harem.