Suterareta Yuusha no Eiyuutan - Story 4-6: 『Outbreak of War』

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.

“I’m going to adopt a child.”Duke Ferio Voreoti’s impulsive decision shocked everyone in the mansion.Not only did he make her his daughter, but he also gave her the name of a ‘beast’ that only direct members of the bloodline could receive.“Even as you breathe right now, I’m earning money.”“It’s confidence, not arrogance.”“My face really does have its advantages.”The most arrogant father in the whole world, and“I love muscles the most. Let’s get muscular.”“Show me your thigh muscles! Your bu*t would be even better!”“You’re nothing but a flower if you have a calm personality…”his corrupted(?) daughter.And…“I will give his excellency the information he wants most.”“Information I want most, you say…”“You won’t regret it.”…A stepmother(?) with a strange secret as well.

Shao Qing’s only regret in life is that she blindly fell in love with a worthless man. She gave up everything for him, but in exchange was run over by his conniving mistress when she was close to her delivery date. Fortunately, Heaven left her a way. Crimson rain fell from the sky, the end of the world arrived, she resurrected in the morgue and gave birth to a little monster. Turning into a half human, half zombie freak; her son neither human, nor monster; they have no other choice but to rely on zombies’ crystal nuclei to develop their special abilities and continue living. This debt, she’ll definitely repay that cheating couple!

- Description from Novelupdates

Changqing has always felt that she’s incomparable to Guan Ying in every aspect. Even though she is pretty and has a good family background, this world is nothing more than a world where Princes are more attracted to Cinderellas.