A Fully-Leveled Bigshot Builds a Farm with Her Family After Transmigrating - Chapter 410: guilt is impossible

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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A heroine dedicated to creating great wands and magic props;
A heroine dedicated to 100%(?) avoiding mischief and bad luck;
Meet George Weasley, a resourceful(?) daring, careful prankster for twenty years.
Is their collision a lose-lose or a win-win cooperation?

This is the story of Miss Ollivander, who doesn’t know the development of HP’s story, and the lovely Weasley family, George. In addition to the magical joke product and the Horcrux Deathly Hallows, how can other magical items help in the world of HP?
[I want to save all the characters I want to save]

Editing!
I reread the first few chapters over the weekend and found a lot of typos and bugs. In order not to affect your reading, I will revise a few chapters every few days. The plot will not change, but I will fix the problems raised by my friends in the comments before~ Sorry readers who have read it!
Content Tags: Anglo-American Derivatives

Search keywords: protagonists: George Weasley, Gwen Ollivander ┃ Supporting roles: Fred Weasley, Harry Potter, Ron Weasley, Hermione Granger ┃ Others: HP Doujin

One sentence introduction: If you can’t save the world, then save your brother?

Intention: fall in love with George Weasley, do scientific research, and invent. If you can participate in saving the world, accompany your boyfriend to help.

- Description from novelbuddy

A blind Orphan child gets transported to the modern world. Read as he left the world of magic to follow his destiny with an all-knowing system that used to be the God of knowledge.

Meet Legendary Families and famous people as He circumvents through different facets of life with god-given talent.

Be it Acting, singing or cooking, he who once felt guilty for existing will overcome to become a pinnacle existence.

[sexual content and lemons warning]Warning: Sexual content, lemons, Comedy, MILFs, Genius Mc and his harem.Support the novel by adding to your library and with power stones!!*****Freshly turned eighteen, John Newman, a helpless nerd, suddenly gets video game abilities granted to him. A mysterious higher power, a secret Abyss of magic beneath the surface of the normal world, mages, martial artists, eroticism, tragedy and a harem of hot girls awaits.