Isekai Maou to Shoukan Shoujo no Dorei Majutsu - Volume 1 Chapter 2.12

Cao Xin, a young man on earth, died in a car accident, traveled to a troubled world where supplies were scarce, and obtained a “Bronze Immortal Gate”…

…

- Description from novelbuddy

After Xia Feng transmigrated, his heart was mysteriously removed.In its place, a defective demon heart capable of sustaining life only for eighteen years was implanted.This is a magical heart that can sync with the power level of its target.To stay alive, he bound himself to the ultimate villain of the future, a Destructive Witch who was destined to destroy the world.The stronger the Destructive Witch becomes, the stronger he becomes!Thus, Xia Feng realized, it's not my fault for stirring up trouble: “Miss Witch, I admit you're strong, but not strong enough!”

There is no rebirth through time, and there is no system of heaven to cut melons and vegetables;

There is no secret book under the cliff, and there is no great return pill from the dead;

There is no such thing as a full-fledged lust with a strange root and a sacred blood.

If it is said that Shi Jianren is an expert who has attained the Tao and joined the WTO,

Then Bai Haonan was a dazed fellow who smashed his head into blood.

The key is that he still feels that he is living a very happy life!

A story similar to the golden right foot,

A story about a dream,

It depends on what tinted glasses you are wearing.

- Description from novelbuddy