I have an Apocalypse City - Chapter 597 - : The Man-Eating Flower

One day, Katsuragi Daichi and his classmates found themselves in a different world. The god who summoned them to another world divided its power and gave it to them, saying that it wanted Daichi and the rest to defeat the Demon King as heroes. However, Daichi alone was given no abilities. And sure enough, Daichi was thrown away and used as a decoy in a demon’s den. Eaten by a demon, Daichi had lost consciousness and thought he had passed away, though when he came to he noticed his statuses had skyrocketed. He had obtained『Revenge of the Resented』. Every time he died, his abnormal ability powered up.

The simulation is over, and the entry is obtained: a showdown!

Looking at this entry, Zhao Meng was stunned.

“How should this term be used?”

“Hey! Here’s a wounded fox!”

…

A few years later, a woman who looked like a fairy appeared in front of him, and said:

“My lord, I’m here to repay my favor!”

This book is also called “Starting from Transforming Monsters”

- Description from novelbuddy

One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.

Bai Qingqing, the disciple of the Divine Physician, with goodwill, treats the domineering Prince for blindness, only to render herself at the mercy of him. In the name of practicing medicine, the doctress makes him have spicy cuisine for every meal as revenge. Seeing him frown upon the food, sweat at the pungent dishes, she is merely stoked! Poor Qingqing is no villain material, she ends up having a soft spot for him. Her tender care for the Prince unknowingly reveals her biggest secret-her true identity. After the prince’s eyes are cured, he mobilizes the military with great fanfare to keep her around…