Global Superpower: I Control All Elements - Chapter 5 - Promoted to Three Levels in a Row, Extensive Financial Resources

After dying in an oddly anticlimactic vending machine accident, Kazuki Ren is reincarnated in the demon realm—not as a hero, not as a villain, but as the only human male student enrolled at the mysterious Academy of Ruin, a school where all the professors are demon lords and all the students are powerful, beautiful she-demons.Ren is told he has one task: survive.But there’s a catch. The Academy’s darkest secret is about to awaken, and Ren holds a hidden power that could either destroy the demon world... or rule it.Now surrounded by seductive demons with hidden motives, eldritch tomes, forbidden dungeons, and twisted exams, Ren must master his ability—or be consumed.Magic, mystery, danger, and temptation await in this dark academia harem fantasy.

Roy’s life was nothing special. The only thing commendable was the last few moments when he saved a mother and her child from a drunk driver.
…
It’s really an egg! Damn it, what kind of monster have I become? Did I fall into Hell instead of making it to Heaven??
Join Roy as he ventures through various worlds with the Custom Made Demon King System—a system that allows Roy to draw anything he can imagine and create it through exchanging souls!

This novel is also known as Only I Level Up

10 years ago, after “the Gate” that connected the real world with the monster world opened, some of the ordinary, everyday people received the power to hunt monsters within the Gate. They are known as “Hunters”.

However, not all Hunters are powerful. My name is Sung Jin-Woo, an E-rank Hunter. I’m someone who has to risk his life in the lowliest of catacombs, the “World’s Weakest”.

Having no skills whatsoever to display, I barely earned the required money by fighting in low-leveled catacombs… at least until I found a hidden catacomb with the hardest difficulty within the D-rank catacombs!

In the end, as I was accepting death, I suddenly received a strange power, a quest log that only I could see, a secret to leveling up that only I know about! If I trained in accordance with my quests and hunted monsters, my level would rise.

Changing from the weakest Hunter to the strongest S-rank Hunter!

- Description from Novelupdates

Jayhan's life was more active than the average person's, and he was loving it.He had a beautiful gamer girlfriend who was basically every man's type and a job working as a construction worker for the government while also being a streamer on the side.One day, he and his girlfriend got into a new game that had launched, an apocalypse game that focused on survival.What happens when this game suddenly becomes reality, and the whole world is pulled into this madness?Not only that, Jayhan also realized, unlike everyone else, he had a system, one that gave him an edge over the rest.[Welcome to the Survival System.][You have unlocked three unique skills for your survival.][The SSS-rank skill, Radar, is now under your possession.][The SSS-rank skill, Lord of Information, is now under your possession.][The SSS-rank skill, Absorb, is now under your possession.][For every orb you absorb, you get closer to gaining the skill of said orb.][For every follower you gain, you activate, share their growth, and progress.]Just when Jayhan thought he had gotten everything, he found out he wasn't the only one with a system; his girlfriend was also gifted the same thing.Except hers is solely focused on his safety.{Jayhan's survival rate is below 79%.}{Alert, danger has been placed on Jayhan.}How will they survive the apocalypse together when other people are actively trying to follow him in the process?