God of Money - Chapter 35:

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.

Chen Che traveled through the strange world of immortality with an overload plug-in.

Every time he enters the overload state, his body will experience some discomfort.

The training speed of the exercises has been improved, and the weak cough.

The speed of boxing comprehension increased, and the arm was red and swollen.

The speed of supernatural power cultivation has increased, and the headache is splitting.

…

Chen Che, who was suffering from an external illness, chose to practice in a low-key manner.

It was not until the first year of Daozong that the new emperor ascended the throne and began to rectify the dynastic order, killing traitors…

Then something unexpected happened!

What?

The father I never met turned out to be a big traitor?

It also affects me to be exterminated by the nine clans?

never mind! Stop pretending!

I see who can kill me!

- Description from novelbuddy

Neo was on the verge of achieving his dreams, set to graduate with flying colors and secure a bright future. But fate had other plans.One moment, he was lounging in his apartment, enjoying his simple and ordinary day. The next, he found himself in a nightmare—a brutal game orchestrated by the hidden rulers of the world.But Neo wasn’t just another victim. When he was pushed to the brink of death, something awoke within him—an ability unlike any other. God-Tier Adaptive System .Every injury made him tougher. Every battle made him smarter. Every encounter shaped him into the perfect survivor.Now, he isn’t just fighting to escape. He’s evolving. And soon, those who once saw him as prey will learn to fear him.'To kill those sick monsters, I must become something far worse.'

Only a pure maiden can have a privilege to make contract with a spirit.

In Areishia Acadamy, maidens from noble family were gathered there, giving them an elite education to become a spirit contractor. A boy Kamito, by accident he peeped on a girl, Clair, who was taking a bath, and he even made a contract with spirit that she wanted.

Kamito was actually an irregular male spirit contractor, which should not exist.