I'm Leveling Up Too Quickly - Chapter 10 - Women Are Calamity

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.

She, the only descendant of Chinese ancient martial arts, a stunning ghost hand genius doctor, once passed through into the Ye family waste lady.

Open your eyes again, the sky and the earth are surging! What? Born waste? Disaster star? Very good, she will soon let them see what is born waste, what is a star of misfortune.

He is the evil emperor respected by thousands of people, mysterious, noble, and unattainable.

When he met her, she avoided him like a snake, and he entangled her like a vine.

“Evil Emperor, it’s not good, Madam ran away again!”

“Chasing!”

“Evil Emperor, it’s not good, Madam is hiding!”

“Look!”

- Description from novelbuddy

The second moon marked the beginning of a revolutionary change.

With the emergence of monsters and dungeons in modern society, and the ability users who fight against them, the world faces a shift in its paradigm.

It heralds the advent of a new energy source and the decline of traditional occupations.

Common sense thus becomes warped and imagination becomes reality.

After choking to death on a watermelon, Rong Jiahui thought that she would enter the netherworld and be reincarnated.

But when she opened her eyes, she discovered, to her very horror, that she had returned twelve years into the past…

Looking at the beautiful and awkward “little brother” that would be conferred the title of Marshal in the future for outstanding military service, she almost let out a snort of laughter.

She firmly decided to hug the thigh of this little brother, and climb to the top of her life!

The plan was beautiful, but it had just one problem.

Why had this little brother… suddenly turned into…

A little sister…

- Description from Novelupdates