I Signed-In For A Billion Dollar Mansion From The Very Beginning - Chapter 11 - Am I That Kind of Person?

“While playing a Tsukkur erotic game that I loved, I somehow became possessed. To make things worse, I transformed into a perverted kid—one of the villains from the NTR series.”

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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Annan transmigrated to a new world – the Land of Dense Fog. He had become a rare elite NPC who possessed the player’s system.

However, he had the heart of a player.

I like to stir up matters, and unbridled. But, I’m a kind player. The ally of justice who is favored by this world.

I’m on a main mission. As the righteous player, I’m following my destiny to eradicate you, the evil NPC!

Dear player, I’d recommend you to stop running away. The mission is completed. I’m the righteous NPC now to punish you, the evil players…

—

In the long dark night, the crimson moon hangs high in the sky.

Hoarse whisper patrols the streets. The brass steam engine is emitting blood mist.

Your brain is in ecstasy; your eyes are enchanted.

With cracked skins, it sprouts new flesh.

In the gray mists, shirek cries come from the flesh wall that consumes thousands of corpses…

“Stop crying, our players don’t bite. They just want to play with you.”

The Solitary Schemer, Number 1 Player, Land of Dense Fog’s Savior, Leader of 13 Saints, Friend of 12 Upright Deity, Pioneer King, “The Righteous One,” Gatekeeper of Forth Disaster, Crownless Deity, the great Annan advised kindly.

Sherlock is a new generation Dungeon Lord whose ambition is to become the greatest Devil King and building up the greatest Dungeon in the Underworld.