Genshin Impact: Supreme Justice of Teyvat - Chapter 2 - The Monster Editor System

On the wedding day, her fiancé and his lover had a love affair and eloped. Her eyes were dim, she seized the man in front of the Civil Affairs Bureau.”To sum it up, your bride is not here, my groom ran off, wouldn’t it be better if we… fight together?”. Before marriage, she said, “Even on the bed, between me and you, there will not be anything!” After the marriage, he said, “Do not try, how do you know?”

The main character is reborn as a character from a game he played in his previous life. This character falls into ruin along with the villainess, spending the last of their years together. A man named Kururi Helan.

I just lost myself in the deep and shallow temptation of her.
——by Jiang Hanyu
Everyone knows that the person Nan Gao doesn’t mess with is Jiang Hanyu
She is arrogant and fierce, relying on beauty, a proper little overlord in school
Everyone thinks that the best relationship with Jiang Hanyu is to call him brothers.
But one day, someone found that Jiang Hanyu was holding the hand of the goddess of coldness in the class and lowered his eyebrows after class.
Unruly girls become gentle and charming
He also said in an unbearable and irresistible voice, “Si Nian, will you give me a kiss?”
Then everyone knew that the best relationship with Jiang Hanyu was…

TIPS:
1. The Great Demon King X Miss Gao Leng
2. Campus text

- Description from novelbuddy

Transmigrating into a fantasy world, starting as a typical rich and handsome guy, he has a useless main character fiancé, a sister who knows the future plot, and a distant cousin who is the reincarnation of his nemesis, the Nine Heavens Mysterious Maiden.He becomes the final boss in a female-oriented novel, forcibly killed by the plot?Although he has a system that allows him to become stronger by binding with geniuses, Jiang Minghan states that as a gentleman who likes to stay calm and friendly, he just wants to be good to others and doesn’t want to be a villain.To avoid the fate of being overpowered by the female leads in the future, he can only walk further down the path of a villain.But unknowingly, when did he become the source of darkness, disrupting the eternal heavens?