The Villain's Little Sister is Spoiled by the Male Lead - Chapter 26

The Heavenly Voice was bestowed upon the world, and so the calendar of the Great Dao began. The world entered a new age of digitized cultivation. Humanity activated the immortal destiny seal to become cultivators.

The day she transmigrated it, she was already the wife of two men. She later became the Queen of the country. Her life has been cherished by seven men.

- Description from Novelupdates

On the will left behind by the 14 year old suicide victim K:

“Taku Sugawara is the devil. Nobody should believe his words.”

Three years ago, the animals and plants on Earth underwent crazy and unexplainable changes that included transformations, reversions, and the addition of otherworldly species. And it was the start of a brand-new type of profession in the new generation of humanity – Monster Trainers, people who specialized in taming monsters.