The World of Otome Games is Tough For Mobs - Volume 7, Chapter 13 “Reward”

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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Seventeen-year-old Hajime Nagumo is your average, everyday otaku. However, his simple life of pulling all-nighters and sleeping in school is suddenly turned upside down when he, along with the rest of his class, is summoned to a fantasy world!

Due to the whims of a higher-dimensional being called “The One”, the World of Terra ushered in a Monthly Apocalypse World Update Era.Every month, the World will draw a random monthly apocalypse world update theme, and the world will transform depending on what update theme has been drawn.Starting with a Zombie Apocalypse World theme, The World of Terra became infested with zombies!As a transmigrator, Zayne Voss, who thought he was living in a normal modern world, was caught up in this madness.Fortunately, he awakened the innate ???-rank talent, the Doomsday Life Simulator System![The Doomsday Life Simulator System allows the host to simulate your future and life in a given doomsday scenario.][For example, the simulator will randomly draw a doomsday scenario, and one of them might be a zombie apocalypse scenario. In that case, the host can experience life in a zombie apocalypse world.][Of course, it's not limited to that, as there are also different kinds of doomsday scenarios like the Helios Extinction Event, where the sun explodes and humanity faces such a world-ending scenario.][Not all doomsday scenarios are winnable and survivable, as some can be a dead end. However, your goal is not to win but to survive as long as possible and attain as many achievements as possible.][The longer you survive and the more you accomplish within that doomsday scenario, the higher your score will be. The higher the score, the greater the rewards you'll receive.][The rewards you can receive are mostly related to the power, skill, experiences, and talent that you possessed before the doomsday life simulation ended. They will be brought back to the real world so the host can gain power from doing life simulations.]-Ding![The host can choose one doomsday scenario from four of the following:][A. Helios Extinction Event][B. AI Singularity Rebellion][C. Global Ocean Survival][D. Acid Rain Catastrophe]Drawing the doomsday scenario called “Global Ocean Survival,” where everyone started with a wooden raft on a vast ocean, Zayne grinded in the doomsday simulation to become stronger in the real world!While everyone was still running away from zombies, Zayne had already eaten a Fairy Fruit from the Global Ocean Survival World and killed all the zombies around him!

Mochizuki Touya, a 15-year-old boy, who got zapped by a flash of lightning due to a freak accident caused by God, wakes up and finds himself face-to-face with God.