MTL - Evolved From Polluting the World - Chapter 54 dead night

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

As childhood sweethearts, they were made to engage under the manipulations of their families. It involved having to to live in the same room and sleep together.

One night, she is accidentally made drunk, and in his delirium, he kisses her only to realize he enjoys it. From time to time, he would sneak a kiss on her, but his “crime” is eventually discovered in an accident. After being accused by her, he says with a smile, “You are my wife, why can’t I kiss you?”

The two people’s daily routine is full of bickering and mutual discrediting of each other.

Although he claims to disparage, he actually cares intensely about her. He feels crazily jealous when she is close to other men, to the point of tying her to his side, so that she becomes exclusively his.

- Description from web

Qiao Yanzhou is a video gaming streamer.

Gu Zixing is a professional gamer.

Qiao Yanzhou is a big fan of Gu Zixing.

Gu Zixing is Qiao Yanzhou’s idol.

Qiao Yanzhou is a quiet fan.

Gu Zixing is a cool and charming man.

Qiao Yanzhou is a couch potato.

Gu Zixing is a world champion.

A ranked game brought the two together, and the chemistry between them takes an unexpected turn…..

Not long after:

Gu Zixing: Xiao-Qiao, am I still your idol?

Qiao Yanzhou: Yeah.

Gu Zixing: Can I kiss you then?

Qiao Yanzhou: Sorry, who did you say you were?

- Description from Novelupdates

5 years after the world changed, the final boss appeared.