Bog Standard Isekai - Chapter 3Book 1:

Two thousand years ago, the Emperor slayed a dragon in the wild, inaugurating the era of mankind.Since then, whenever malevolent dragons wreaked havoc, heroes have always emerged as destined, allowing time to flow across a long and peaceful human world.As the century turned, the sudden appearance of individuals with supernatural abilities triggered unprecedented disturbances. People constructed a sanctuary for these superhumans in the sky, on the back of a colossal dragon, called the Dome City.One spring day, Gongsun Ce, who had just started university six months ago, encountered a hunter who claimed to be a Wuchang master.“Hey, can you really do such a thing?!”“It's quite normal, because I am a superhuman.”—Thus, the love-comedy battle of supernatural abilities in a youthful campus begins!

Crying blood and tears, she pledged a poisonous vow. The gods did not fail her. She was sent back to a decade ago. The legitimate daughter of Jiang family returned from hell.

This book is about how a famous web writer who specializes in doting genre falls in love with a Mr. cellophane writer who specializes in angst genre.

- Description from Novelupdates

Su Bai wakes up and finds that the world has changed drastically. He realizes he has come to a world of pets. After accepting the new setting, he is determined to become a powerful Pet Tamer.