Tensei Shitara Slime Datta Ken (WN) - Chapter 380

This is a story of a little man who walks forward silently, in awe, and strives to chase his dream.

- Description from novelbuddy

After the real daughter of the Jiang family fell sick, she became stupid and insisted on marrying the cold-blooded, cruel, and crippled Fu Jiu. Mother Jiang said, "So be it. She's a good-for-nothing anyway. I only asked her to marry in place of my sister." Father Jiang: "After you marry him, remember to ask 9th master to help your sister find a better marriage." The fake heiress said, "Sob, I feel so sorry for Sister, but… if you get beaten to death by the 9th master, the Fu family will compensate us a lot of money, right? I'm looking forward to it." Jiang Li sneered. She bid farewell to her hypocritical family and brought her shabby dowry to the Fu family. After having been reborn once, she knew very well that Fu Jiu was the only person who treated her well. Everyone was waiting for Jiang Li to be beaten to death. Finally, one day, she was photographed by reporters and posted online. "It's all your fault! You used so much force last night! The Jiang family is going to laugh at me again!" Fu Jiuxiao said, "With me around, no one will dare to laugh at you. Moreover, I will make them pay back tenfold for the pain that the Jiang family has caused you!"

In the year 3000, the Earth shattered and it was torn open by a rift between realms that unleashed ancient beasts, magical chaos, and apocalyptic storms. Civilization crumbled, giving rise to a brutal new law: Tame or be Torn Apart. Beast Tamers, bonded to mutated and other creatures now rule what remains of the world through strength, savagery, and guild-driven power.Kelvin, a scavenger scraping by in the ruins, lives in the shadow of these warlords until he unearths Xerion, the End-Tyrant, a legendary primordial beast sealed beneath the earth. Bound by a forgotten bloodline and a cursed contract, Kelvin inherits the Sigil of the Overlord, thrusting him into a war-torn world where survival is no longer enough.He was hunted by guilds, worshipped by outcasts, and pursued by enemies both human and monstrous, Kelvin must rise from nothing to either unite or destroy what’s left of civilization. As forbidden powers awaken and ancient truths unravel, one man and his beast stand poised to reshape the fate of a world teetering on the edge of annihilation.

A fluffy, sweet modern GL story about a mature older women and a cute university student.