Dragon King: Throne of Demons and Gods - Chapter 98: When You Gaze Into The Abyss, The Abyss Gazes Back

I fell in love. Her name was Shirasaka Yukino. I could only look at her from a distance. However one day I heard that she already had a boyfriend. Even if I love her, I can’t have her. The devil sent me an invitation. I can make her mine!

Doomsday comes, and human beings enter the heavenly world.
Ten years later, Yang Chen, who was betrayed tragically, returned strongly with the Tianyu bug. In this life, he vowed to make the betrayal pay the price. He has a powerful bug bonus, just like an open hang. Frightened to hear…

- Description from novelbuddy

In a world ravaged by fiend beasts and spatial rifts, humans fight back using “”Soul Contracts”” to tame these creatures, turning them into protective spirit animals. Amidst this chaos, Zhou Mu, born with inadequate soul intensity and physical prowess, struggles to become an esteemed Animal Whisperer.With only a low-tier grass snake as his spirit animal and limited chances to pass the Whisperer’s test, Zhou Mu’s future looks bleak. However, an unexpected twist comes with the discovery of a mysterious system that allows him to trade personal attributes for power. As he navigates this new potential, Zhou Mu faces the challenge of overcoming his limitations and rising to power in a world where strength determines one’s fate.

I became a heroine who dies during the protagonist’s awakening event.