MTL - I Have a Time Travel Simulator - Chapter 400

Humanity had finally ended the war with the Demon Race and sealed them away, forever.However, they now have to face the treat of the Shadow World, an equally dangerous threat to their civilisation under the rule of the Emperor!Facing only misfortune from a young age, Nikolaus Reinhardt never expected anything good to happen to him.But his world completely changed when he awakened as an Ascendant, and accidentally summoned a member of the Demon Race in his house.Just because he messed around with a god damn book!

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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An edict bestowed marriage.

A noble daughter with three strikes: no talent, no looks, no virtue.

A trash wangye – disfigured, disabled, seriously ill.

Everyone says: Perfect match!

Bridal veil down–she wore a shallow smile. Leisurely and calm. Having experienced life and death, she only wanted to lead a quiet life.

Going up to the wedding hall–he had a slight smile on his face; a heart as cold as ice. He suffered all kinds of humiliation, but there will be a day when he will stand above all beneath the heavens.

–He is my husband. To bully him is to bully me. To insult him is to insult me. To hurt him is to hurt me. If someone were to hurt me, I would have to get to rid of them!

–Benwang doesn’t believe in supernatural beings and doesn’t seek heaven. If she were to die, benwang would turn this entire world into purgatory and sacrifice this whole country to her!

- Description from Novelupdates

I fell into a harem manga and became a magical girl.I just wanted to become a government employee and live a carefree life without getting involved with the main characters, but…“I love you.”The main heroine, who was supposed to confess to the protagonist, confessed to me instead.…Why?